Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

A. why

B. what

C. how

D. which

* Đáp án

A

* Hướng dẫn giải

Đáp án A

The reason why

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