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