We noticed that each animal and each tree in the park _____ being taken good care of.
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A
are
B
is
C
were
D
was
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In view of the global financial crisis, every possible means ________ to stimulate the economic development in China.
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A
have tried
B
have been tried
C
has tried
D
has been tried
There a Christmas party in Sunshine Secondary School next Friday evening.
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A
is going to
B
will have
C
is going to have
D
will be
Mr. White as well as his friends ________ a number of countries in the past few years.
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A
has travelled
B
have travelled
C
had travelled
D
travelled
Every possible means ______ to prevent the air pollution, but the sky is still not clear.
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A
is used
B
are used
C
has been used
D
have been used