单项选择题

Please do not hesitate to call me if I can be of further assistance.

A．contact
B．see
C．help
D．touch
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单项选择题
She seemed to have detectedsome anger in his voice.
A．noticed
B．heard
C．realized
D．got
单项选择题
I am not certainwhether he will come.
A．determined
B．sure
C．sorry
D．glad
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