It was a real race time to get the project completed in such a short time.A. overB. byC.

问题补充：

It was a real race time to get the project completed in such a short time.

A. over

B. by

C. for

D. against

答案：

A. over

B. by

C. for

(答案→)D. against

解析：考查介词。句意：在这么短的时间内完成此项目真的要跟时间赛跑。答案选D、race against 与……赛跑/竞赛。