(2013·高考湖南卷)The university estimates that living expenses for international students________around $8,450 a year，which________a burden for some of them.
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A
are；is
B
are；are
C
is；are
D
is；is
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The number of the students in our school ____ rising since 2006.
#85809
A
is
B
has been
C
are
D
have been
--- It’s raining hard and we can’t go picnicking today.---If only the weather _____ fine!
#85975
A
is
B
were
C
had been
D
would be
---So you are back; are all the students present at the meeting? ---Not really, nobody but Lucy and John ___________ in the meeting room.
#85961
A
are
B
were
C
was
D
is
—Remember that where and when two different English question words___________. —I see, but can you tell us how to use them, sir?
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A
be
B
is
C
are
D
Being
--Why does the lake smell terrible? ---Because large quantities of water ______.
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A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted