单项选择题

It was (when) she was (about) (to go) to bed (while) the telephone rang.()

A. when
B. about
C. to go
D. while

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Time will ______whether I made the right choice or not.
A．see
B．say
C．tell
D．know
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Different cultures have different communication ().

A. styles
B. signals
C. designs
D. symbols
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