A lot of people visit a dentist only when________

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

A. They have well brushed teeth

B. They have holes in their teeth

C. They begin to have toothache

D. Their teeth grow properly

* Đáp án

* Hướng dẫn giải

Đáp án là C

Ý trong bài: Unfortunately, many people wait until they have toothache before they see a dentist.

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