3 . 用方框中所给单词的适当形式填空。

this;     cough;     harm;     toothache;     hurt

1. Too much sweet can be ________ to kids’ teeth.
2. Mike says he will bring his best friend home to have dinner with us. ________ means we will have a guest tonight.
3. Be careful that you don’t fall and ________ yourself.
4. He went to his dentist (牙医) because he had a bad ________.
5. Before starting his speech, Matthew ________ and cleared his throat (喉咙).

7 . 用方框中所给短语的适当形式填空。

get illnesses；because of；look pale；hand out

1. UNICEF wants all children to be healthy and tries to prevent them from ________.
2. Amy with her classmates ________ leaflets to people in the street every month.
3. He caught a bad cold ________ the heavy rain.
4. You ________. Why not have a good rest?

9 . 用方框中所给短语的适当形式填空。

as a result; on the other hand; at a time; be willing to; on time

1. The doctor advised him to do exercise three times a week, at least 30 minutes _________.
2. The traffic was heavy, but we got to the railway station _________.
3. The living environment has become worse. _________, lots of animals are in danger.
4. I _________ work for the interests of the people.
5. On the one hand, I dislike watching movies. _________________, I have much work to do.