---I went to see my friends off at the airport.---Is thatyou were late for the important m

问题补充：

---I went to see my friends off at the airport.

---Is thatyou were late for the important meeting?

A. because

B. why

C. how

D. reason

答案：

A. because

(答案→)B. why

C. how

D. reason

解析：考查连词用法。此处对重要会议迟到探究原因。故选B。