It had never ____ to him that he might be falling in love with her.
| A．occurred | B．struck | C．happened | D．hit |
A concert will be held in our city _____ the great musician.
| A．in search of | B．in charge of |
| C．in memory of | D．in favour of |
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 |