一、根据句意及中、英文提示完成单词。
1. When people ride motorbikes, they must put on (头盔).
2. —What do you think of life on (火星)?
—It is interesting, but I don't want to live there.
3. We may need to wear special boots because of the problem of (重力).
4. Tom went camping with us and taught us how to up(搭建)a tent.
5. The old man can't breathe smoothly; we should give him an air (a container that holds liquid or gas).

一、1. helmets 2. Mars 3. gravity 4. put 5. tank

二、用方框中所给单词的适当形式填空。

1. I never think about into space.
2. There will be less on Mars than that on the Earth.
3. I want a bag for the coming trip.
4. (2023·江苏扬州邗江区一模)There are many different kinds of fresh and fruits on sale in that fruit shop.
5. We need to wear special boots to make us heavier because there is gravity on the Moon than on the Earth.

二、1. travelling 2. pollution 3. sleeping 4. dried 5. less

三、单项选择。
()1.I Linda's cousin Canada. In fact, he is American.

A.thought; from
B.think; was from
C.thought; was from
D.think; is from

三、1. C 【点拨】根据语境可知，“想”是发生在过去的动作，需用过去式 thought，排除 B、D 选项；主句是一般过去时，宾语从句一般也用过去的某种时态。故选 C。

()2.The funny man can't get his food his helmet.

A.to; because
B./; because
C.to; because of
D.with; for

2. C 【点拨】表示“够到”要用 get to；后面的“his helmet”是名词短语，要用 because of。故选 C。

()3.—I think washing hands every day is good our health.
—Yes, I agree you.

A.to; to
B.with; to
C.for; with
D.at; with

3. C

()4.We David everywhere yesterday, but we didn't him. Finally we that he was in his friend's home.

A.found; find out; found
B.looked for; find; found out
C.found; find; found
D.looked for; find out; found out

4. B

()5.—Peter has never been to a water park.
—.

A.I have neither
B.I haven't too
C.Me too
D.Me neither

5. D 【点拨】me neither 表否定，意为“我也不……”；me too 表肯定，意为“我也……”；由 never 表否定可知，要用 me neither。故选 D。