It is not uncommon for there     problems of communication between the old and the young.
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A
being
B
would be
C
be
D
to be
推荐题目
Before he went abroad, he spent as much time as he ____ English. 
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A
could learning
B
learned
C
to learn
D
could learn
Mary never does any reading in the evening, _________.
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A
so does John
B
John does too
C
John doesn’t too
D
nor does John
This is the first time I ______ such beautiful music .
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A
heard
B
am hearing
C
will hear
D
have heard
--Can Tom help me with my Physics? --His Physics is ____________ yours. He failed the exam, too.
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A
as good as
B
not worse than
C
no better than
D
no worse than