Hardly ______ the house when he realized that he had forgotten his keys.

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. left 

B. had left 

C. had he left 

D. he had left

* Đáp án

* Hướng dẫn giải

Đáp án là C

Đảo ngữ: Hardly+ trợ động từ+ S+ V: ngay khi…

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