单项选择题

You are too rigid: you must learn to change your plans when the situation _________ it.

A．calls on
B．calls for
C．calls forth
D．calls in
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单项选择题
We can't just _________ these objections off.
A．ward
B．lay
C．shrug
D．shake
单项选择题
The groom's hand _________ the soft mane of the horse.
A．struck
B．provoked
C．fondled
D．remarked
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