Larry drove all night to get here for his sister’s wedding. He _____ exhausted by

Câu hỏi :

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

A. ought to be 

B. must have been

C. could be

D. will have been

* Đáp án

* Hướng dẫn giải

Đáp án B

Cấu trúc: must have+ PP: phỏng đoán điều có thể xảy ra trong quá khứ.

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