They are working______time to fulfil the task according to the schedule.

admin2014-03-22  25

问题 They are working______time to fulfil the task according to the schedule.

选项 A、against
B、over
C、ahead of
D、before

答案A

解析 against time“分秒必争”;overtime“超时;加班”(注意:overtime是一个词,不能分开写);ahead of time“提前”。
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