问题
选择题
Faced with financial crisis, we think it is time to ___ the trip to Europe．
A．call in
B．call for
C．call off
D．call on
答案
答案：C
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Faced with financial crisis, we think it is time to ___ the trip to Europe．
A．call in
B．call for
C．call off
D．call on
答案：C