Usually computers________to search the Internet．

A．use

B．are using

C．are used

D．used

Please bring________this point at the next meeting．

A．in

B．up

C．to

D．down

What________is the most helpful invention？

A．you think

B．I think

C．you do think

D．do you think

—A number of students________in the dining hall．

—Let me count．The number of the students________about 400．

A．are；is

B．is；are

C．are；are

There was an important meeting last night．Mr.Smith________to it．

A．was invited

B．invited

C．is invited

D．invites

The children________not to play with fire．

A．are told

B．tell

C．asking

D．ask

(2011山东潍坊)The new treatments________by Norman Bethune helped a number of soldiers．

A．invent

B．invents

C．inventing

D．invented

She lives in a house，but she never feels .

A. alone，lonely B. lonely，alone

C. alone, alone D. lonely, lonely

I met a good friend of mine while I _____ on the street.

A. walks B. walk C. was walking D. am walking

Tom ______the USA. He ________back in two months.

A. has gone to; comes B. has gone to; will be

C. has been to; comes D. has been to; will be