单项选择题

She won't contact you, ______ something unforeseen happens.

A．as
B．since
C．though
D．unless
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单项选择题
The typist checked the spelling carefully in order to ______ all the spelling mistakes.
A．abandon
B．diminish
C．eliminate
D．withdraw
单项选择题
We are ______ with these experienced technicians.
A．too pleased to work
B．too pleased working
C．only too pleased to work
D．only too pleased working
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