Nam’s score on the test is the highest in the class; he _________ hard last night.

Câu hỏi :

Nam’s score on the test is the highest in the class; he _________ hard last night.

A should have studied                                         

B may have to study            

C must have studied                  

D could have studied

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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