Đề thi giữa kì 1 Tiếng Anh 12 có đáp án (Đề 1)

Indicate the correct answer: I was tired when you saw me because I__for the exam.

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

I was tired when you saw me because I____for the exam.

studied

have been studying

had been studying

would study

Giải thích

Đáp án C.