单项选择题

Retirement is obviously a very complex______ period and the sooner you start planning for it, the better

A．transformation
B．transmission
C．transportation
D．transition
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单项选择题
He was always attentive______ my ideas.
A．to
B．with
C．on
D．at
单项选择题
What sort of______ can you get for the night in a city like this
A．commission
B．treatment
C．accommodation
D．recommendations
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