单项选择题

All her energies are ______ upon her children and she seems to have little time for anything else.

A．guided
B．aimed
C．directed
D．focused
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单项选择题
Our manager is ______ an important customer now and he will be back this afternoon.
A．calling on
B．calling in
C．calling up
D．calling for
单项选择题
If people feel hopeless, they don t bother to ______ the skills they need to succeed.
A．adopt
B．acquire
C．accumulate
D．assemble
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