—I am so sorry to have come late for the meeting.—It is not your fault.With rush－hour tr

—I am so sorry to have come late for the meeting.
—It is not your fault.With rush－hour traffic and heavy rain，it is no wonder you were late.
A. a；a
B. the；the
C. /；/
D. /；a

A. a；a(答案→)B. the；theC. /；/D. /；a解析：　由句意可知，traffic和rain均为特指，故应加定冠词。

就是这个解释