she came for school late is that she missed the early bus.AWhatB. ThatC. WhichD. Why

问题补充：

she came for school late is that she missed the early bus.

AWhat

B. That

C. Which

D. Why

答案：

A. What

B. That

C. Which

(答案→)D. Why

解析：本题的含义是她上学迟到的原因是由于我没赶上早班车，why表示原因，故本题选D。