Having finished (A) his term paper before the (B) deadline, it was delivered (C) to the professor before (D) the class.   

Câu hỏi :

Having finished (A) his term paper before the (B) deadline, it was delivered (C) to the professor before (D) the class.   

A finished

B before the

C it was delivered

D before

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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