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一 根据首字母补全句子,并选择合适的图片。
( )1. The room is so m______.
( )2. S______ makes the air dirty.
( )3. R______ makes the streets messy and dirty.
( )4. The children often p______ trees.
( )5. He can s______ the floor to keep our classroom clean.
( )2. S______ makes the air dirty.
( )3. R______ makes the streets messy and dirty.
( )4. The children often p______ trees.
( )5. He can s______ the floor to keep our classroom clean.
答案:
1. messy; C 2. Smoke; E 3. Rubbish; A 4. plant; D 5. sweep; B
二 用所给单词的适当形式填空。
1. —Listen! Who ______ (cry) in the bedroom?
—I think it's a cat.
2. Many fish in the river ______ dead because there ______ a lot of rubbish in it at that time. (be)
3. Can you find any ______ (bin) in the street?
4. There were a lot of ______ (factory) in our city two years ago.
5. Trees help ______ (keep) the air clean.
6. —Look at ______ (this) pictures of our garden.
—They are nice.
1. —Listen! Who ______ (cry) in the bedroom?
—I think it's a cat.
2. Many fish in the river ______ dead because there ______ a lot of rubbish in it at that time. (be)
3. Can you find any ______ (bin) in the street?
4. There were a lot of ______ (factory) in our city two years ago.
5. Trees help ______ (keep) the air clean.
6. —Look at ______ (this) pictures of our garden.
—They are nice.
答案:
1. is crying 2. were; was 3. bins 4. factories 5. (to) keep 6. these
( )1.—Let's ______ this afternoon.
—OK. I like walking.
A.walk to there
B.walk to home
C.walk home
—OK. I like walking.
A.walk to there
B.walk to home
C.walk home
答案:
C
( )2.______ can we do ______ our school clean?
A.Why; to keep
B.What; to keep
C.What; keep
A.Why; to keep
B.What; to keep
C.What; keep
答案:
B 【解析】why 意为“为什么”;what 意为“什么”,符合语境。第二空应用不定式表目的。
( )3.What a ______ river! We can see so many fish clearly.
A.dirty
B.messy
C.clean
A.dirty
B.messy
C.clean
答案:
C 【解析】dirty 意为“脏的”;messy 意为“肮脏的”;clean 意为“干净的”。根据后句句意“我们能清楚地看到很多鱼。”可知,河水是干净的。
( )4.The river was dirty. There ______ lots of dead fish in it.
A.is
B.are
C.were
A.is
B.are
C.were
答案:
C 【解析】fish 指鱼的数量时,是可数名词,单复数同形,且前句为一般过去时,故用 were。
( )5.Trees can give us fruit, and they also help ______ the air clean.
A.keep
B.keeping
C.to keeping
A.keep
B.keeping
C.to keeping
答案:
A 【解析】help (to) do sth. 意为“帮忙做某事”。
四 根据图片提示补全对话。
A: Look at the 1. ______ of the park.

B: It's so messy and 2. ______.
A: It 3. ______ beautiful and clean three years ago.
B: What 4. ______ it messy and dirty then?
A: 5. ______. Many people threw it on the ground.
B: 6. ______ should we do?
A: We should 7. ______ up the rubbish and 8. ______ it in the bin.
A: Look at the 1. ______ of the park.
B: It's so messy and 2. ______.
A: It 3. ______ beautiful and clean three years ago.
B: What 4. ______ it messy and dirty then?
A: 5. ______. Many people threw it on the ground.
B: 6. ______ should we do?
A: We should 7. ______ up the rubbish and 8. ______ it in the bin.
答案:
1. picture/photo 2. dirty 3. was 4. made 5. Rubbish 6. What 7. pick 8. throw/put
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