1 . You’d better give up smoking at once.

A．start smoking

B．start to smoke

C．stop smoking

D．stop to smoke

2 . Mozart started ________ music when he was four.

A．write

B．writing

C．writes

D．wrote

3 .
1. 开始做某事 _________________________
2. 整天 _________________________
3. 代替，而不是 _________________________
4. 结果 _________________________
5. 做出改变 _________________________
6. 为了 _________________________
7. 与……做斗争 _________________________
8. 童工 _________________________

4 .

national       flag       prepare        travel       race

1. My family went ________ on May Day last year.
2. October 1st is ________ Day of the PRC.
3. The ________ of China is flying in the air.
4. People usually start ________ for the festival before it comes.
5. People have dragon boat ________ in many places on lunar May 5th.

5 . 赶快锻炼起来，不要等到来不及。
Start ________ ________ it’s too late.

6 . They started ________ (put) up a tent two hours ago.

7 . Lily started ________ and dancing after dinner.

A．sing

B．sang

C．singing

D．sings

8 . it, start, too, exercising, is, late, before
_______________________________________________________________ .

9 . 从很小就学习对孩子来说有好处。
________good________ children to start________ ________ a very young age.

10 . We usually start ________(have) the first class at eight.