The reason he was late was he missed the bus.A. why because B. why thatC. that whyD.

问题补充：

The reason he was late was he missed the bus.

A. why, because

B. why, that

C. that, why

D. because, why

答案：

A. why, because

(答案→)B. why, that

C. that, why

D. because, why

解析：句意：他迟到的原因是他没有赶上火车。第一空是why引导的定语从句，它在从句中作状语，that引导的表语从句，that在从句中不作成分，the reason why…be that…故选B。