The reason his being late for school was he missed the train.A. for becauseB. why thatC. w

问题补充：

The reason his being late for school was he missed the train.

A. for because

B. why that

C. why because

D. for that

答案：

A. for because

B. why that

C. why because

(答案→)D. for that

解析：这题考查the reason，其后的介词是for，其后的表语从句是that引导，句意是：他上学迟到的原因是他错过了火车。选D。