The earth is our home. It ______________ well.
#44581
A
must be protected
B
should protect
C
need protect
D
need protecting
推荐题目
You have to stay behind if your homework before five o'clock.
#44375
A
wasn’t done
B
hasn’t done
C
doesn't do
D
isn't done
A lot of trees ______ on the hill yesterday.
#44945
A
are planted
B
will be planted
C
have been planted
D
were planted
To make our city more beautiful ,rubbish ______ into the river.
#44541
A
must throw
B
can’t throw
C
needn’t be thrown
D
mustn’t be thrown
The students how to do the experiment in class yesterday.
#45055
A
were taught
B
better
C
was taught
D
teach