一、根据首字母提示填空。
1. We should k
2. Your coat is d
3. Beijing is a big c
4. The r
5. Let’s go out to get some fresh a
1. We should k
keep
the school clean.2. Your coat is d
dirty
. Please take it off and wash it.3. Beijing is a big c
city
in China.4. The r
rubbish
made the streets messy.5. Let’s go out to get some fresh a
air
.答案
一、1. keep 2. dirty 3. city 4. rubbish 5. air
二、用所给词的适当形式填空。
1. Please keep
2. Look at
3. Who
4.
5. The fish in the river
1. Please keep
our
(we) city clean, and we can live happily.2. Look at
these
(this) pictures of the classroom. They are nice.3. Who
makes
(make) the streets clean every morning?4.
To keep
(keep) the air clean, we can walk
(walk) to school.5. The fish in the river
were
(be) dead many years ago.答案
二、1. our 2. these 3. makes 4. To keep; walk 5. were
(
— We can plant more trees and take the bus.
A.Where
B.What
C.Who
B
) 1.— can we do to make the air clean?— We can plant more trees and take the bus.
A.Where
B.What
C.Who
答案
三、1. B
(
— My brother .
A.make; does
B.made; does
C.made; did
C
) 2.— Who the kitchen dirty?— My brother .
A.make; does
B.made; does
C.made; did
答案
三、2. C
(
A.with
B.to
C.from
C
) 3.Smoke factories made the air dirty.A.with
B.to
C.from
答案
三、3. C
(
A.to home
B.home
C.to school
B
) 4.Su Hai and Su Yang usually walk after school.A.to home
B.home
C.to school
答案
三、4. B 解析：walk home走回家，home是副词，前面无需加to。
(
A.dirty
B.clean
C.messy
B
) 5.— How the river is! — Yes, I can see many fish in it.A.dirty
B.clean
C.messy
答案
三、5. B
四、按要求完成句子。
1. We can go to school by metro. (改为同义句)
We can
2. The room is messy. (改为感叹句)
3. He throws rubbish on the floor. (改为一般疑问句)
4. We can plant trees to keep the air clean. (对画线部分提问)
1. We can go to school by metro. (改为同义句)
We can
take the metro
to school.2. The room is messy. (改为感叹句)
What a
messy room!3. He throws rubbish on the floor. (改为一般疑问句)
Does
he throw
rubbish on the floor?4. We can plant trees to keep the air clean. (对画线部分提问)
What
can you do
to keep the air clean?答案
四、1. take the metro 2. What a 3. Does; throw 4. What; do
