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
 The girl was often heard ______ happily in her room.
#44796
A
sing
B
to sing
C
singing
D
sings
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
---Mum,_______ I watch TV? ---No. Unless your homework _______________.
#44578
A
could; finishes
B
can; will finish
C
may; is finished
D
can; will be finished