19. In the following sentence, what is the antecedent of the pronoun "it"?

The class members chose Chicago to visit because it provides the best opportunity for education and entertainment.


A. Opportunity
B. Chicago
C. Entertainment
D. Education

Is it B?

20. Which part of speech is not appropriate in formal writing, but often used in daily conversation?

A. Preposition
B. Adverb
C. Conjunction
D. Interjection

Is it D?

Both are right.

Thank you so much!!!!

You're welcome.

For question 19, to find the antecedent of a pronoun, you need to identify the noun that the pronoun is replacing or referring to. In this case, the pronoun "it" is referring to something that provides the best opportunity for education and entertainment. Looking at the sentence, the only noun that fits this description is "Chicago." Therefore, the antecedent of the pronoun "it" in this sentence is B. Chicago.

Yes, you are correct. For question 20, the part of speech that is not appropriate in formal writing but often used in daily conversation is the interjection. Interjections are words or phrases that express strong emotions or sudden outbursts and are generally informal in nature. Examples of interjections include "wow," "oh," "oops," and "hurray." In formal writing, interjections are typically avoided as they can give a less professional or serious tone to the text. Therefore, the answer is D. Interjection.