用 whether 或 if 填空。
1. Our school basketball team will win the next match they practice more.
2. Our hearing will be hurt we always listen to music with earphones.
3. In fact， it is a home，a city or a country，people will grow rich and strong when they work together and help one another.

1. if
2. if
3. whether

1. —I'm sorry to tell you that our school trip is because of the rain.
—Oh，no. It can't be true!

A.put down
B.put off
C.put out
D.put up

B

本题考查动词短语辨析。题干中提到“因为下雨”，所以学校的旅行应该会被推迟。选项A“put down”意为写下，镇压；选项B“put off”意为推迟；选项C“put out”意为扑灭；选项D“put up”意为张贴，搭建。根据语境可知，正确答案为B。

2. Last weekend，we a tent by the lake and had much fun.

A.put up
B.put off
C.put on
D.put in

A

根据句意“上周末，我们在湖边搭了帐篷，玩得很开心”，“搭帐篷”常用短语“put up a tent”。A.put up 意为“搭建”；B.put off 意为“推迟”；C.put on 意为“穿上”；D.put in 意为“安装”。结合语境，应选A。

3. —Guess what? I've five pounds during this May Day holiday.
—Well，you should avoid over-eating if you want to keep fit.

A.put up
B.put on
C.put off
D.put at

B

本题考查put的短语搭配。put up表示“搭建；张贴”；put on有“增加（体重）”的意思；put off是“推迟”；put at一般表示“估计；断定”。根据题意“—猜猜怎么着？我在这个五一假期体重增加了五磅。—嗯，如果你想保持健康就应该避免吃得过多。”可知这里说的是体重增加，应该用put on。