When you want to work for the country in the future, _________, you should have strong body and rich knowledge.

The medicine he had taken _________the blood.

A. has bad effect on

B. had a bad effect on

C. has a bad effect on

D. had bad effect on

He was lucky in the accident, but his _________car is under repair.

A. hurt　                      B. destroyed               C. ruined                       D. damaged

The old man told his grandchildren that the earth _________the sun.

A. circles                       B. moved round

C. circle around              D. around

She was knocked _________by a car and now was still_________.

A. down; in danger         B. off; dangerous

All the workers here get _________by the hour.

A. paid　                      B. paying                   C. to pay                       D. pay

--I ask you if we could have a talk.

--_________.Let's begin.

A. Surely we could         B. Of course not

From the text and the dictionary you will learn what to say and use the word properly.