单项选择题

It's sensible to start any exercise program gradually at first.

A．workable
B．reasonable
C．possible
D．available
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A lot of people could fall iii after drinking contaminated water.
A．boiled
B．polluted
C．mixed
D．sweetened
单项选择题
She stood there, trembling with fear.
A．jumping
B．crying
C．moving
D．shaking
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