--- What made Bill so angry?

--- ______. His girl friend promised to come at 8:30, but she hasn’t come yet.

A. Having kept waiting　 　　　　　B. Being kept waiting

C. To be kept waiting　 　　　　　 D. Being kept waited

The question remains ______the Party can win the majority of the people .
 A. that   　　　　 B. if  　　　　 C. whether   　　　　　　D. /

He searched in his drawer and at last ________ (挑选)the best one for me.

We have various summer camps for your holidays, you can choose _______ based on your own interests.（ ）

A. either　　　　　 B. each　　　　 C. one　　　　　 D. it

This is one of the railways _____ last year.

A. building　 B. built　　 C. to be built　 　　　　 D. to build

Many people observed the thief ______ something from the lady’s bag, but no one stop him ____ that.

A. steal; to do　 B. to steal; doing　 C. stealing; do　　 D. steal; doing

As we joined the big crowd I got ______ from my friends.

A. separated　　 B. spared　　　

C. lost　　　　　 D. missed

 ---What do you suppose made her so unhappy?

---_______ her son infected the A-H1N1 flu.

A. Know　 B. Known　　 C. Knowing　　　 D. To know

The reason____a whole room can be warmed is due to the hot air.

A. because　　　　 B. why　　　　 C. for　　　　　 D. as