I always have so many things to _______ when I come into the office after a trip abroad.

A.add to 　　 B.attend to　 C.contribute to　 　 D.appeal to

The constitution, unlike other forms of laws, is fundamental ______ our social system working properly.

A. for keeping　 　　　B. to keeping　 　　 C. to keep　 　　　　D. with keeping

— Doing it like this means _____________ time?

— I didn't mean _____________ it.

A. wasting ; to do　　 B. to waste ; doing　　　 C. waste ; do　　　　　 D. wasting ; doing

There was a________look on his face when he met with the________problem.

A．confusing；confusing 　　　 B．confused；confused

C．confusing；confused 　　 D．confused；confusing

—Why don't we hold a party to celebrate the achievements gained by our Olympic players?

—________.

A．Because we haven't got enough preparations.

B．Good idea!

C．It's all because of the terrible weather.

D．Not all would like to attend it.

I admire those people. 　　　　having little money, they feel happy and satisfied.

　 A．With　　　　 B．Because of　 C．Instead of　 D．In spite of

I was about to leave for work ______the telephone rang.

A.as　　 B.until　　 C.while　　　 D.when

I tried phoning her office, but I couldn’t