It is polite ______ you to give seats to the elderly.
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A
with
B
for
C
of
D
to
推荐题目
– Why did they help Mrs Brown with her work?– Because she was _____.
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A
an old friend of them
B
the friend of them
C
on the their friend
D
a good friend of theirs
It’s dangerous         a close look at the tiger in the zoo.
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A
for us taking
B
of us to take
C
of us taking
D
for us to take