(why / you / clean) the bathroom before you bathed the dog?
A. Why had you cleaned
B. Why you had cleaned
C. Why cleaned you had
D. Why did you clean
Dấu hiệu: before she bathed =>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: Wh-word + had + S + Vp2?
=>Why had you cleaned the bathroom before you bathed the dog?
Tạm dịch: Tại sao bạn đã dọn dẹp phòng tắm trước khi bạn tắm cho chó?
Đáp án cần chọn là: A
Frank Sinatra caught the flu because he (sing)__________ in the rain too long.
How long (learn / she)_________ English before she went to London?
He (drive) __________less than an hour when he ran out of petrol.
One of the parents _____________ the children's song this time last year.
I ______ my document before the power went out in the computer lab.
As soon as I shut the front door I realised that I………….my key in the house.
Marry _________ her housework already by the time Peter came over.
The doctor took off the plaster that he (put on)_________ six weeks before.
The flood ___________ all the beautiful building in our cities this time last month.