Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#85598
A
has been used
B
have been used
C
is used
D
are used
推荐题目
In the city the old ______.
#86102
A
take good care of
B
are taken good care of
C
is taken good care of
D
are been taken good care of
Mr. White together with his three colleagues __________ at the meeting last week.
#86044
A
was
B
were
C
are
D
is
There _____ an exciting party at Mr. Wang’s this evening.
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A
will be
B
will have
C
are going to be
D
is going to have
Either you or one of your students _______ to attend the meeting that is due tomorrow.
#85671
A
are
B
is
C
have
D
be
