The fire spread through the hotel very quickly but everyone _____ get out.

　 A. had to 　 B. would

　 C. was able to 　 D. could

________ from heart trouble for years，Professor White has to take some medicine with him wherever he goes.

A. Suffered 　　　　　　 B. Suffering

C. Having suffered 　　　 D. Being suffered

It is reported that many a new house 　　 at present in the disaster area.　　　　　　

A. are being built　　 B. were being built　 C. was being built　　 D. is being built

By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.

　 A. walks　　 B. walked　　 C. has walked　　 D. had walked

The picture of the park      memories of our class’s trip last year, when Mr. Smith began to take charge of our class.

A. called up       　 B. reminded　　　 C. turned up       D. came up

It is immediately clear ____ the financial crisis will soon be over.
A. since       B. what          C. when         D. whether

Before ____ the lab, make sure ____.

　　A. you leave; all the lights are turned on B. leaving; all the lights turn on

　　C. you leave; that all the lights are turning off

　　D. leaving; that all the lights are turned off

He is __________ is known as a hacker—he likes to show off on the Internet and attack websites.
A、who            B、what              C、that              D、which

She has been practicing ______ the same tune on the piano for nearly an hour.（ ）

A. play　　　　 B. playing　　　 C. to play　　 D. be playing

I, who__ your teacher, will try my best to help you with your English.

a.is b.are c.be d.am