You won’t pass the examination……………you study more.
A. as long as
B. unless
C. if
D. whether.
Chọn đáp án B
If you ………. to my advice in the first place, you wouldn’t have been in trouble.
If you stay up late the previous night, you ………. sleepy the next morning.
If Peter ………., Sarah will be sad because she wants to meet him very much
If his teeth still …….., he will have to go to the dentist’s again.