(1) Eric watched the news on TV. (2) His father watched the news on TV.(3) the newscaster talked about special events.(4) A police officer a firefighter and a teacher taught third graders about safety.(5) The mayor took a trip and gave a speech.

1/ what is missing in sentence 4?

A. commas.
B. a subject.
C. a simple predicate.
D. a complete predicate.

2/ which sentences could be joined to make one sentence with a compound subject?

A. Sentence 1 and 2
B. Sentence 2 and 3
C. Sentence 3 and 4
D.Sentence 4 and 5

And you think the answers are ... ?

Q1/ commas.

Q2/ sentence 4 and 5

Please use the same name for your posts.

1. right.
2. wrong.

1/ To identify what is missing in sentence 4, we need to analyze the sentence construction. Sentence 4 states, "A police officer, a firefighter, and a teacher taught third graders about safety."

Looking at the options:
A. Commas: The sentence already contains commas.
B. A subject: The subject of the sentence is "a police officer, a firefighter, and a teacher."
C. A simple predicate: The simple predicate is "taught."
D. A complete predicate: The complete predicate is "taught third graders about safety."

Since all the elements necessary for a grammatically complete sentence are present, the answer is not B, C, or D. Therefore, the missing element in sentence 4 is A. commas.

2/ To determine which sentences can be joined to make one sentence with a compound subject, let's examine the given options.

A. Sentence 1 and 2: Sentence 1 is "Eric watched the news on TV," and Sentence 2 is "His father watched the news on TV." Both sentences have different subjects (Eric and his father), so they cannot be combined to create a compound subject. Therefore, option A is not correct.

B. Sentence 2 and 3: Sentence 2 is "His father watched the news on TV," and Sentence 3 is "The newscaster talked about special events." There are no common subjects between the two sentences, so they cannot be joined to form a compound subject. Hence, option B is not correct.

C. Sentence 3 and 4: Sentence 3 is "The newscaster talked about special events," and Sentence 4 is "A police officer, a firefighter, and a teacher taught third graders about safety." Again, there are no shared subjects, making it impossible to combine them into one sentence with a compound subject. Thus, option C is not correct.

D. Sentence 4 and 5: Sentence 4 is "A police officer, a firefighter, and a teacher taught third graders about safety," and Sentence 5 is "The mayor took a trip and gave a speech." These two sentences have distinct subjects (police officer, firefighter, teacher, and the mayor), so combining them would create a compound subject. Therefore, the correct answer is option D.