If Tom ______ an alarm, the thieves wouldn't have broken into his house.
A. was installed
B. to install
C. had installed
D. have installed
Ta dùng câu điều kiện loại 3 diễn tả một hành động không xảy ra trong quá khứ
Cấu trúc: If + S + had + Vp2, S + could/would + have PP +…
Tạm dịch: Nếu Tom đã cài chuông báo động, những tên trộm sẽ không đột nhập vào nhà anh ta.
Đáp án cần chọn là: C
If the sea water continues to be polluted, many fish species ______ extinct.
If the factory ______ dumping poison into the lake, all the fish and other aquatic animals _______.
I think that if you _____ in his shoes, you ______ in the same way.
If you _____ to take a bus to school now, I ____ you a lift a little later.
If she _____ Chinese, I believe that she _____ it very well. However, she doesn’t pay any attention to it.
It was much colder than we had thought. _____ we had taken more warm clothes.
If local people drink this untreated water, they _______ have cholera.
We're going to start painting the house tomorrow_____ it's not raining.