单项选择题

I was ______ the point of telephoning him when his letter arrived.

A．to
B．on
C．at
D．in
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单项选择题
The manager spoke highly of such ______ as loyalty, courage and truthfulness shown by his employees.
A．virtue
B．features
C．properties
D．characteristics
单项选择题
We''ll visit Europe next year ______ we have enough money.
A．lest
B．until
C．unless
D．provided
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