At 12 o`clock last night when I went past Tod`s house, some music could be heard. He______ TV.
A. should have been watching             B. must have been watching
C. could have watched                   D. would have watched    

He likes living ______ (独自地).?

_______ for several weeks, the city needed food.

A. As having flooded      　 　　　　　　 B. being flooded 

C. Having been flooded         　　　　　　　 D. To flood

By all _______, you must try every _______ to help him.

A. mean, mean　　　　　　　 B. means, means　

C. means, mean　　　　　　　 D. mean, means

What's the ________language in China?

A．speaking 　　　 B．spoken

C．be spoken 　　　 D．to speak

Peter’s jacket looked just the same as Jack’s，but it cost________his.

A．as much twice as 　　　　　　　　　　B．twice as much as

C．much as twice as 　　　　　　　　　 D．as twice much as

The new research team was led by the _____ engineer.

A. main 　 B. major　 C. chief 　 D. primary

—Dad, I've finished my assignment.

—Good, and ________ you play or watch TV, you mustn't disturb me.

A．whenever　　 B．whether　　 C．whatever　　　 D．no matter

—　 ______ when has the country been open to international trade?

—1978, I suppose.

A. Since　　　 　 　B. In　　　　　 　 C. From　　　　　 　 D. After