Sonny and _me___ have been inducted into the National Honor Society

I
Me

The guide showed the other tourists and __them____ where in the palace the Treaty of Versailles had been signed.

They
Them

The experimental vaccine against the malaria parasites attacks them_____ at the stage when they infect red blood cells
They
Them

Sir William Gilbert and _him____ wrote The Pirates of Penzance before they wrote The Mikado.
He
Him

Neither __us___ nor our veterinarian could figure out why the dog kept whimpering and howling.
We
Us

The librarian lent Geraldine and me_____ some rare books from the reference section

I
Me

Ernest Hemingway, F. Scott Fitzgerald, and _them____ were all writers of the "lost generation".

They
Them

They live in a motor home complete with _its____ own bathroom and air conditioning.
Their
Its

In spring, Washington, D.C. is absolutely beautiful with all of the cherry trees in _their____ full flower.
Theirs
Their

I enrolled in a beginning art class, and surprisingly the worst drawings made by students in the class were not _mine___.
Mine
My

Everybody in the class should bring _their_____ book to school tomorrow.
His or her
Their

The police chief and his brother Mark commended the heroes and then _they_____ treated the heroes to dinner.

He
They

Who was the young lady for __who____ you changed a flat tire on Pleasant Street as I drove by this morning?
Whom
Who

Neither Joe nor his parents want to give _their_____ money to the dishonest politician.
Their
His

The owner of Big Splash Water Park is the woman __who___ promised high-paying jobs for lifeguards during the summer.
Whom
Who

_us____ guys are going to form a club: the skills we learn in shop classes will help us to build our clubhouse.
us
we

The mayor hurt __himself____ as he inspected the slum buildings.
Himself
Hisself

After tying up the canoe, Joel and _i___ ate our lunches.
myself
I

In the plots of many of Shakespeare's plays, the heroines need to disguise __themselves____ as men.
Theirselves
Themselves

Each of the birds at the birdfeeder eats _their____ fill of seeds and then flies to the creek for a drink of water.
Its
their

These are used as subjects:

I, you, he, she, it, we, they

These are used as objects:
me, you, him, her, it, us, them

Go through all sentences again and re-think many. Pay attention to whether the pronoun is serving as a subject or an object.

Some websites to study:

http://grammar.ccc.commnet.edu/grammar/pronouns1.htm#personal

http://grammar.ccc.commnet.edu/grammar/pronouns1.htm#relative

http://grammar.ccc.commnet.edu/grammar/pronouns1.htm#indefinite

To determine the correct pronoun to fill in the blank, you should consider the subject of the sentence and whether the pronoun is being used as a subject or object.

In the first sentence, "Sonny and me have been inducted into the National Honor Society," you should use the pronoun "I" because it is being used as the subject of the sentence.

In the second sentence, "The guide showed the other tourists and them where in the palace the Treaty of Versailles had been signed," you should use the pronoun "them" because it is being used as the object of the verb "showed."

In the third sentence, "The experimental vaccine against the malaria parasites attacks them at the stage when they infect red blood cells," you should use the pronoun "them" because it is being used as the object of the verb "attacks."

In the fourth sentence, "Sir William Gilbert and him wrote The Pirates of Penzance before they wrote The Mikado," you should use the pronoun "him" because it is being used as the object of the verb "wrote."

In the fifth sentence, "Neither us nor our veterinarian could figure out why the dog kept whimpering and howling," you should use the pronoun "us" because it is being used as the subject of the sentence.

In the sixth sentence, "The librarian lent Geraldine and me some rare books from the reference section," you should use the pronoun "me" because it is being used as the object of the verb "lent."

In the seventh sentence, "Ernest Hemingway, F. Scott Fitzgerald, and them were all writers of the 'lost generation'," you should use the pronoun "them" because it is being used as the subject of the sentence.

In the eighth sentence, "They live in a motor home complete with its own bathroom and air conditioning," you should use the pronoun "its" because it is being used to show possession by the motor home.

In the ninth sentence, "In spring, Washington, D.C. is absolutely beautiful with all of the cherry trees in their full flower," you should use the pronoun "their" because it is being used to show possession by the cherry trees.

In the tenth sentence, "I enrolled in a beginning art class, and surprisingly the worst drawings made by students in the class were not mine," you should use the pronoun "mine" because it is being used to show possession of the worst drawings.

In the eleventh sentence, "Everybody in the class should bring their book to school tomorrow," you could use either "his or her" or "their" as the pronoun. "His or her" would be more formally correct, but "their" is commonly used as a gender-neutral pronoun when referring to a singular indefinite pronoun like "everybody."

In the twelfth sentence, "The police chief and his brother Mark commended the heroes and then they treated the heroes to dinner," you should use the pronoun "they" because it is being used as the subject of the verb "treated."

In the thirteenth sentence, "Who was the young lady for whom you changed a flat tire on Pleasant Street as I drove by this morning?" you should use the pronoun "whom" because it is being used as the object of the preposition "for."

In the fourteenth sentence, "Neither Joe nor his parents want to give their money to the dishonest politician," you should use the pronoun "their" because it is being used to show possession by Joe and his parents.

In the fifteenth sentence, "The owner of Big Splash Water Park is the woman who promised high-paying jobs for lifeguards during the summer," you should use the pronoun "who" because it is being used as the subject of the verb "promised."

In the sixteenth sentence, "Us guys are going to form a club: the skills we learn in shop classes will help us to build our clubhouse," you should use the pronoun "us" because it is being used as the subject of the sentence.

In the seventeenth sentence, "The mayor hurt himself as he inspected the slum buildings," you should use the pronoun "himself" because it is being used reflexively to refer back to the subject "the mayor."

In the eighteenth sentence, "After tying up the canoe, Joel and I ate our lunches," you should use the pronoun "I" because it is being used as the subject of the verb "ate."

In the nineteenth sentence, "In the plots of many of Shakespeare's plays, the heroines need to disguise themselves as men," you should use the pronoun "themselves" because it is being used reflexively to refer back to the subject "the heroines."

In the twentieth sentence, "Each of the birds at the birdfeeder eats its fill of seeds and then flies to the creek for a drink of water," you should use the pronoun "its" because it is being used to show possession by each individual bird at the birdfeeder.