---Let’s have a further talk.
---Sorry, I don’t have time. My report is due on Friday and I am in a race time.
A. over
B. in
C. on
D. against
网友回答
A. over
B. in
C. on
(答案→)D. against
解析：考查介词词义辨析。A在…之上（正上方），越过；B在…里；C在…之上（接触东西表面）；D反对，逆着。Be in a race against time是固定搭配，意为：与时间赛跑。句意：——---我们进一步谈谈。——对不起，我没有时间。我的报告是在周五到期，我在与时间赛跑。