Tom (study) _______________ hard and felt good about the test he was about to take.

Câu hỏi :

Tom (study) _______________ hard and felt good about the test he was about to take.

A studied

B had studying

C had been studying      

D had been studied

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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