1 . 他们是什么样的？
________ are they ________?

2 . The afternoon lessons begin at 12:30 and f________ at 14:15.

3 . 下列各语句中无错别字的一项是（        ）

A．白求恩同志毫不利己专门利人的精神，表现在他对工作的极端的负责任，对同志对人民的极端的热枕。

B．这种人其实不是共产党员，至少不能算一个纯萃的共产党员。

C．晋察翼边区的军民，凡亲身受过白求恩医生的治疗和亲眼看过白求恩医生的工作的，无不为之感动。

D．白求恩同志是个医生，他以医疗为职业，对技术精益求精。

4 . We can’t live w________ air.

5 . —Are ________ (that) tomato plants?
—Yes, they are.

6 . The 17-year-old high school student is trying to ________ a special (特别的) robot.

A．discover

B．fall

C．invent

D．collect

7 . Mike has studied for a long time. He should take ________ (break).

8 . —Are these his pens?
—________. They’ re my pens.

A．Yes, they are

B．Yes, these are

C．No, they aren’t

D．No, these aren’t

9 . There is a pair of ________________ (剪刀) in the box.

10 . —Where do you play badminton (羽毛球)?
—In the ________ (体育馆).