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
They only have a limited amount of time to get their points across.
A．large
B．total
C．small
D．similar
单项选择题
I am not certain whether he will come.
A．determined
B．sure
C．sorry
D．glad
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