Đề kiểm tra 15 phút Tiếng Anh 12 Thí điểm Học kì 2 (Đề 5)
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I was tired when you saw me because I ____ for the exam

4/15

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