Tom with his friends ______ volleyball since three o’clock.
#103826
A
has been playing
B
is playing
C
have been playing
D
have played
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Every possible means ___ to prevent the air pollution, but the sky is still not clear．
#101596
A
is used
B
are used
C
has been used
D
have been used
I ______ on a sofa because my grandparents have come for the weekend.
#103774
A
slept
B
was sleeping
C
have slept
D
am sleeping
—Did you find the missing couple in the mountain yesterday?—No, but we ________ to get in touch with them ever since.
#104758
A
have tried
B
have been trying
C
had tried
D
had been trying
Isn’t it lovely to think that I _________ myself on the sunny beach tomorrow at this time?
#101897
A
am enjoying
B
will enjoy
C
shall enjoy
D
will be enjoying
--- What is that wonderful smell? --- Our neighbor ________ for a party.
#99373
A
have prepared
B
is preparing
C
prepare
D
will prepare