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電子課本網(wǎng) › 第98頁

第98頁

信息發(fā)布者：

drive
bad
dirty
use
much
rivers
fish
trees
clean
help
b
e
a
c
d
S: To protect the Earth, we should plant 
more trees. 
S: To protect the Earth, we should walk to 
school.
S: To protect the Earth, we shouldn't cut 
down too many trees.
S: To protect the Earth, we shouldn't throw 
rubbish into the river.
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