You will sound more polite if you ask _____________ a question.

A. in favor of B. in the shape of

C. in the form of D. in honor of

The children who are crazy about playing computer games are all driven by _______ at first.

A. discount B. belief

C. curiosity D. Satisfaction

—Shall I give you a ride as you live so far away? —Thank you. ________.

A. It couldn’t be better B. Of course you can

C. If you like D. It’s up to you

Gun control is a topic ____________ Americans have discussed for a long time.

A. of which B. with which

C. about which D. into which

He is always late for work, and yet nothing is ever said to him. I don't know how he___________ it.

A. cuts down B. gets away with

C. takes off D. turns up

You should inspect the wheels regularly, and replace them ______ they cause you trouble.

A. while B. when C. before D. Until

Traditionally, college students hold a graduation ceremony to encourage themselves when they are to _________ on their life journey.

A. set up B. set off C. set about D. set down

No one really knows exactly of when the first people arrived in we now know as California

A．where B．when C． what D．which

I was on the highway when this car went past, followed by a police car. They _______ at least 150 kilometers an hour.

A. should have been driving

B. must have been driving

C. could have driven

D. would have driven

I want to employ a college student who is good at English and math and has lots of spare time to teach my son. __________, he or she must have a sense of responsibility.

A. Above all B. All in all

C. After all D. In all