We must do whatever we can _____ the river _____ any more.
A. to keep; polluted B. to prevent; being polluted
C. keep; polluted D. prevent; being polluted
People who want to cross Canada in less than five days forget the fact _____ Canada is 5,500 kilometers from coast to coast.
A. whether B. that C. how D. why
As we all know, Asia is _____ Europe.
A. four times as large as B. bigger than four times
C. four times as much as D. four times the size as
_____ excited the whole nation most is _____ more than 100 workers who were trapped under the coal mine in north China have been rescued.
A. It; that B. That; whether
C. What; whether D. What; that
The little girl _____ on the sofa _____ to me that she had ______ the purse on the table.
A. lying; lay; ;aid B. lie; lied; laid
C. lying; lied; lay D. lay; lied; lain
If you keep on your research, you will succeed _____.
A. at the same time B. at no time
C. in time D. on time
