Every possible means _____ to prevent the air pollution, but the sky is still not clear.
#85634
A
is used
B
are used
C
has been used
D
have been used
推荐题目
Half of the workers here ________ under 30 ________.
#86326
A
is;years
B
are;year old
C
is;years old
D
are;years of age
There are usually 28 in a person’s mouth, so we should listen to the doctor’s ______ to protect（保护）them.
#44312
A
tooth, advice
B
teeth, advice
C
toothes, advices
D
teethes, advices
--- Have you got some water to drink?--- Here you are. There _______ still some in the bottle.
#44285
A
are
B
has
C
is
D
have
(2014·湖南省部分重点中学3月联考)Many a student________selected to take part in the English competition，and more than one teacher________them on speaking and writing.
#85545
A
was；has coached
B
were；have coached
C
was；have coached
D
were；has coached