Walking alone in the dark, the boy whistled to________his courage.

A. keep up B. hold up

C. take up D. set up

Did it ever ________to you to contact the police when you saw the suspect?

A. occur B. refer

C. happen D. apply

—Did you make it at last?

—Yes. But for your help, it________a serious loss.

A. would cause B. must have caused

C. would have caused D. may cause

I've tried hard to improve my English.But by no means ________with my progress.

A. the teacher is not satisfied B. is the teacher not satisfied

C. the teacher is satisfied D. is the teacher satisfied

One thousand dollars a month is not a fortune but would help cover my living ________.

A. bills B. expenses

C. prices D. charges

In our childhood，we were often ________by Grandma to pay attention to our table manners.

A. demanded B. reminded

C. allowed D. hoped

Health problems are closely connected with bad eating habits and a ________of exercise.

A. limit B. lack

C. need D. demand

The president spoke at the business meeting for nearly an hour without _________ his notes

A. bringing up B. referring to

C. looking for D. trying on

Shall we________our discussion and have some tea?

A. break off B. break down

C. break into D. break out

The explorer got a disease in blood for ________of fresh vegetables and fruit.

A. sake B. lack

C. ignorance D. knock