1.
完形填空。
Look, it's our Earth. There1 some water, hills and trees on it. We shouldn't 2 water. Because in many places, there is not 3 water.
We also 4 cut down too many trees. We should5 more trees. They are 6 for the air. People like using 7 bags in the supermarket. But I think they're bad for the Earth. We should use 8 bags and boxes. The Earth is our 9 . We should 10 it.
（1）
A .
is
B .
are
C .
aren't
D .
isn't
（2）
A .
save
B .
keep
C .
waste
D .
saved
（3）
A .
many
B .
much
C .
some
D .
lot of
（4）
A .
should
B .
can
C .
shouldn't
D .
mustn't
（5）
A .
make
B .
plant
C .
keep
D .
save
（6）
A .
bad
B .
use
C .
useful
D .
well
（7）
A .
paper
B .
plastic
C .
glass
D .
hard
（8）
A .
paper
B .
plastic
C .
glass
D .
soft
（9）
A .
school
B .
home
C .
garden
D .
park
（10）
A .
protect
B .
not protect
C .
waste
D .
not waste
