（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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—I will pick you up at 6 tomorrow morning. —So early! I _______ then.
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A
will sleep
B
will have slept
C
will have been sleeping
D
will be sleeping
----Guess what, we’ve got our visas for a short term visit to the UK this summer.---How nice! You ______ a different culture then.
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A
will be experiencing
B
have experienced
C
have been experiencing
D
will have experienced
The room _______ very useful when we had visitors.
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A
was proved
B
has been proved
C
has proved
D
proved