Câu hỏi :

Read the following passage and mark the letter A, B, C, D on our answer sheet to indicate the correct word (s) for each of the blanks

A. sitting

B. talking 

C. participating

D. taking

* Đáp án

C

* Hướng dẫn giải

Đáp án C

Ta có: participate in: tham gia

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