Choose the best answer
I ______ my document before the power went out in the computer lab.
-
A.
had save
-
B.
have saved
-
C.
had saved
-
D.
saved
Dấu hiệu: before the power went out => mệnh đề phía trước “before” diễn tả một sự việc xảy ra trước một thời điểm trong quá khứ nên ta sử dụng thì quá khứ hoàn thành
Cấu trúc: S + had Vp2
=> I had saved my document before the power went out in the computer lab.
Tạm dịch: Tôi đã lưu tài liệu của mình trước khi mất điện trong phòng máy tính.
Đáp án : C
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