—Why are you late todayMary?—I’m sorry Mr Li．My bike on the way．A. broke downB. has brok

问题补充：

—Why are you late today．Mary?

—I’m sorry，Mr Li．My bike on the way．

A. broke down

B. has broken down

C. breaks down

D. had broken down

答案：

(答案→)A. broke down

B. has broken down

C. breaks down

D. had broken down

解析：考查时态。句意：玛丽，你今天为什么迟到了？很抱歉，Mr Li。我的自行车在半路上坏了。动作发生在过去，故选A。