单选题
All the staff members of the department made concerted efforts to ______ the hall for the Christmas party.
A、
clean up
B、
clear up
C、
dress up
D、
make up
【正确答案】
A
【答案解析】
clean up“彻底清扫”；clear up“天晴起来”；dress up“打扮起来”；make up“化妆”。从句子意思上看，只能选clean up。
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