he hasn’t come is he is busy writing his novel.A. Why because;B. Why for;C. That becau

问题补充：

he hasn’t come is he is busy writing his novel.

A. Why, because;

B. Why, for;

C. That, because;

D. What, for

答案：

(答案→)A. Why, because;

B. Why, for;

C. That, because;

D. What, for

解析：考查名词性从句。第一空是由Why引导的主语从句，第二空是because引导的表语从句。句意：他没来的原因就是因为他在忙于写小说。所以选A。