单选题
4.
The party had to be ______ because the host went down with a bad case of flu.
A、
called in
B、
called off
C、
called on
D、
called up
【正确答案】
B
【答案解析】
A．call in召集B．call off取消C．call on号召，拜访(某人)，请求；D．call up打电话，使某人想起，提出。该题意思是该晚会不得不取消。
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