The key _______somewhere.
A.must have been leaving
B. must have left
C.must be leaving
D. must have been left
KEY: D
Giải thích: câu bị động với động từ khuyết thiếu, must have PII: chắc hẳn đã làm gì
Dịch: Những chiếc chìa khóa chắc hẳn phải được để ở đâu đó.
- Why don’t we make a fire? - It’s not cold _____ to make a fire.
He missed an exciting football match on TV last night. He wishes that he _______ it.
John’s eyes were _____ bad that he couldn’t read the number plate of the car in front.
The burglar cut the telephone wires____________ call the police.
The manufacturers have made the taps of their new gas cooker very stiff _________ young children not to be able to turn them on.