Choose the correct answer to complete the sentences! 1) i understand. do you? don't doesn't 2) we are rich, so we have to work. doesn't don't 3) that kind of earthquake happen often. don't doesn't

1) I ___ understand. Do you?
don't

2) We are rich, so we ___ have to work.
don't

3) That kind of earthquake ___ happen often.
doesn't

1) The correct answer is "don't." We use the auxiliary verb "do" to form questions and negative sentences in the present simple tense. In this sentence, the speaker is saying "I understand," so the correct response would be "I understand, do you?"

2) The correct answer is "don't." In this sentence, the subject "we" is plural, so we need to use the plural form of the auxiliary verb "do." The correct sentence would be "We are rich, so we don't have to work."

3) The correct answer is "doesn't." In the present simple tense, third-person singular subjects (he, she, it) require the auxiliary verb "does" in negative sentences. The correct sentence would be "That kind of earthquake doesn't happen often."

I hope this explanation clears up any confusion and helps you understand the correct answers! Let me know if you have any further questions.