—He should have been warned of the danger.—________,but he wouldn’t listen to me.
Can you imagine what difficulty people had this year ________ against the severe natural disasters?
Many a student ________ failed in the biology exam,and Tom is the only one of them who ________ decided to give up the course.
MoYan was awarded the Nobel Prize in 2012, made one of the Chinese people’s long-held dreams come true.
The airport _______ next year will help promote tourism in this area.
There’s no way of knowing why one man makes an important discovery another man, also intelligent, fails.