To
keep
our city clean, we can
take
the bus or the metro to school. We can't
throw
the rubbish on the ground and we can
put
it in the bin. We can
plant
more trees.
答案：【解析】：本題主要考查了根據(jù)課本內(nèi)容填空的能力，需要熟悉課本中Story time部分的內(nèi)容，并準(zhǔn)確記憶其中的關(guān)鍵表達(dá)。題目中給出了關(guān)于保持城市清潔的一些做法的句子，其中有部分單詞缺失，需要根據(jù)課本內(nèi)容填寫(xiě)完整。
【答案】：
To keep our city clean, we can take the bus or the metro to school. We can't throw the rubbish on the ground and we can put it in the bin. We can plant more trees.
(1) What
makes
the river
dirty
?
(2) Is our classroom
clean
?
(3) We can
walk
home.
(4) The trees can help
keep
the air
clean
.
(5) We can
plant
more trees.
(6) There was a lot of rubbish in the
water
.
答案：【解析】：
這是一道英語(yǔ)填空題，需要根據(jù)句意和首字母提示來(lái)補(bǔ)全句子。對(duì)于這類(lèi)題目，我們首先要理解句子的意思，然后結(jié)合首字母提示，推測(cè)出缺失的單詞。接下來(lái)，我們逐一分析每個(gè)句子：
(1) 第一個(gè)句子詢(xún)問(wèn)的是河流被什么污染，結(jié)合首字母m和d，可以推測(cè)出是“make”和“dirty”，表示“使變臟”。
(2) 第二個(gè)句子詢(xún)問(wèn)的是教室是否干凈，結(jié)合首字母c，可以推測(cè)出是“clean”，表示“干凈的”。
(3) 第三個(gè)句子表示我們可以步行回家，結(jié)合首字母w，可以推測(cè)出是“walk”，表示“步行”。
(4) 第四個(gè)句子表示樹(shù)木可以幫助保持空氣清潔，結(jié)合首字母k和c，可以推測(cè)出是“keep”和“clean”，表示“保持清潔”。
(5) 第五個(gè)句子表示我們可以種更多的樹(shù)，結(jié)合首字母p，可以推測(cè)出是“plant”，表示“種植”。
(6) 第六個(gè)句子表示水里有很多垃圾，結(jié)合首字母w，可以推測(cè)出是“water”，表示“水”。
【答案】：
(1) What makes the river dirty?
(2) Is our classroom clean?
(3) We can walk home.
(4) The trees can help keep the air clean.
(5) We can plant more trees.
(6) There was a lot of rubbish in the water.
3. 連詞成句。
(1) metro, school, to, can, we, take, the
We can
take
the
metro
to school.
(2) from, air, dirty, cars, smoke, made, the
Dirty smoke
from cars
made
the
air
dirty
.
(3) to, do, can, our, clean, keep, what, we, streets (?)
What can we do to keep our streets clean?
答案：(1) take; metro
(2) Dirty smoke; made; air dirty
(3) What can we do to keep our streets clean?
A: Look at the rubbish in this old photo.
It made our city
dirty
.
B: What can we do to
make our city clean
?
A: We can
put the rubbish in the bin
.
答案：dirty; make our city clean; put the rubbish in the bin
