一、根据句意及所给中文提示、首字母或英文解释，写出句中所缺单词，每空限填一词。
1. (重力)is the force that keeps us on the ground and stops us from floating away.
2. Firefighters wear special coats and (头盔)to protect themselves from heat and falling ceilings.
3. Last month, the flood washed away the villagers' houses, so the local government provided (帐篷)for them.
4. We need to take our s bag if we want to camp outside during the night.
5. — My phone battery is almost dead. Do you have a p pack?
— Yes, here you are. You can charge it with this.
6. — What do you like to do during holidays?
— I enjoy (to go from one place to another)to different cities like Xi'an, Dalian and Shenzhen.

1. Gravity 2. helmets 3. tents 4. sleeping 5. power 6. travelling

二、根据句意或句子的语法要求，用括号中所给单词的适当形式填空。
1. — What sport do you dislike?
— I hate (swim). It's difficult and I always feel tired after it.
2. We have to eat the (dry)food when we have the field trip in the forest.
3. — It's said that two cases are (probable)connected. Maybe they have the same suspect.
— I suppose so. But we still need more clues to prove it.
4. — China is making big efforts to help people control their weight and live healthier lives.
— Yes. We should eat (little)meat and do more exercise.
5. My brother has ever thought about (return)to Shanghai so that he can get a good job in the future.
6. — There's less air (pollute)around us.
— Yes. Our government has taken many steps to protect the environment.

1. swimming 2. dried 3. probably 4. less 5. returning 6. pollution

三、单项选择。
()1.— What about going hiking this weekend?
— Really? That great. Let's prepare for it together.

A.looks
B.sounds
C.tastes
D.feels

1. B

()2.— Mum, I've signed for a big box. What's in it?
— I'm not sure. It be a present from your brother.

A.might
B.must
C.need
D.will

2. A

()3.— It's reported that a large number of people in the world don't have enough safe drinking water.
— So we should how to deal with the serious problem.

A.look out
B.put out
C.think about
D.complain about

3. C