（湖南省怀化市2014年高三第二次模拟考试）24. My mother _____ all the cleaning for my family, but recently she has been too busy teaching to do it.
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A
will do
B
is doing
C
does
D
had done
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So far this year we _______ a fall in house prices by between 5 and 10 percent.
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A
saw
B
see
C
had seen
D
have seen
—Have you got your exam papers? —Not yet. I guess they _____ at this moment.
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A
are being graded
B
are grading
C
have graded
D
have been graded
— Why, David, you look so tired!— Well, I ________an article and I must finish it tomorrow.
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A
was writing
B
will be writing
C
have been writing
D
have written
.—_______ John this week?—Yes.—Where _______ him?—In the library.
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A
Did you see; did you see
B
Have you seen; did you see
C
Do you see; have you seen
D
Have you seen; have you seen
In the past few months, a discussion ________about whether selecting “Three Goods” Students in elementary and middle schools should be cancelled.
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A
has to be held
B
has been held
C
has been holding
D
was held