They are at the moment working ______ time to get everything ready for the confe

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问题 They are at the moment working ______ time to get everything ready for the conference.

选项 A、against
B、in
C、on
D、ahead

答案 A

解析副词辨析against time与时间竞争，赶时间，特别花时间；in time及时，适时；on time准时，按时；ahead应是ahead of time提前，提早；此处表：他们此刻正争分夺秒为会议作准备。因此A为答案。

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