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。