Smith had a lucky escape. He ___________.
A. would have been killed
B. must have been killed
C. could have been killed
D. should have been killed
Đáp án: C
Giải thích: could have P2: đã có thể làm gì
Dịch: Smith may mắn thoát nạn. Anh ta đã có thể bị giết
He promised to telephone _________________I have never heard from him again.
On this occasion, my class is making an __________ to visit some caves near our city.
________________of all the staff, I would like to wish you a happy retirement.
Hardly any of the paintings at the gallery were for sale, _____________?
I have to ask my father ________ permission to go camping with my classmates
____________ is the Great Wall? It’s between 5 and 13 meters high.
The valley is so picturesque ___________ the refreshments are delicious.