You have to explain us the reason your being absent from school yesterday.A. to; of B. t

问题补充：

You have to explain us the reason your being absent from school yesterday.

A. to; of

B. to; why

C. for; that

D. to; for

答案：

A. to; of

B. to; why

C. for; that

(答案→)D. to; for

解析：explain sth to sb 把......向某人解释，所以第一空用to；the reason your being absent from school yesterday.你昨天上学迟到的原因，……的原因，用for the reason。所以选D。