Three swimmers, Paul, Ed , and Jim, ______________ now in competition for medals.

Câu hỏi :

Three swimmers, Paul, Ed , and Jim, ______________ now in competition for medals.

A is  

B has been                              

C had been                   

D are

* Đáp án

D

* Hướng dẫn giải

Phương pháp giải:

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