单项选择题

Having a trip abroad is certainly good for the old couple, but it remains () whether they will enjoy it.

A.to see
B.to be seen
C.seeing
D.seen

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单项选择题
Some people would rather ride bikes as bike riding has () of the trouble of taking buses.

A.nothing
B.none
C.some
D.neither
单项选择题
He gained his () by printing () of famous writers.

A.wealth; work
B.wealths; works
C.wealths; work
D.wealth; works
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