Young trees____ quite often.
#44612
A
should water
B
should be water
C
should be watered
D
watered
推荐题目
The mayor is happy to find that many trees _______ in our city last year.
#44369
A
plant
B
were planted
C
planted
D
are planted
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
Teenagers _______ allowed to drive in the street .
#44554
A
should not be
B
should be not
C
not should be
D
shouldn’t