Waste paper mustn’t _______. We should keep our environment clean.
#44420
A
throw away
B
thrown away
C
be thrown away
D
been thrown away
推荐题目
There ______ any money in my school bag.
#44768
A
is
B
are
C
aren’t
D
isn’t
Usually John ________ to school in his father’s beautiful car.
#45016
A
has taken
B
is taking
C
is taken
D
has been taken