How long (learn / she)_________ English before she went to London?
A. has she learned
B. had she been learning
C. had she learned
D. she learned
Giải bởi Vietjack
Dấu hiệu: before she went =>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?
=>How long had she learned English before she went to London?
Tạm dịch: Cô ấy đã học tiếng Anh bao lâu trước khi đến London?
Đáp án cần chọn là: C
Frank Sinatra caught the flu because he (sing)__________ in the rain too long.
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.
