They didn’t know how the change had　　　　 .

A．been taken place　　　　　　　　　　　　　　　 B．happen　

C．come about　　　　　　　　　　 D．broke out

The last man _______ the burning house was a fireman.

A. left　　　　　 B. leaving　　　　 C. to leave　　　　 D. being leaving

Every year a flood of farmers arrive in Shenzhen for the money-making jobs they ________ before leaving their hometowns.

A. promised　　　　 B. were promised　　 C. have promised　　 D. have been promised

—Let’s go for a walk, shall we?

—It’s too late now; ________, it’s beginning to rain.

A. in addition 　　 B. in a word　　　　 C. as a result D. in general

The chairman thought 　　　 necessary to invite Professor Smith to speak at the meeting.?

A.that　　　　　 B.it?　　　　　　　 C.this　　　　　　　 D.him

Don’t _____ others. God helps the people who depend on themselves.

A. take on　　 B. rely on　　　 C. put on　　 D. put on

Some people are thirst for knowledge,others for money.

I was a_______ by the news of George's sudden death.

When forbidden to surf the Internet, teenagers often _____ surfing it, saying that it provides them with colorful entertainments, a convenient means of communication as well as useful information

　　 A. argue about　 B. argue with　 C. argue for　 D. argue against