Question

【题目】—I don’t know ____ .

—Because he has to look after his mother.

A.why he is leaving B.why is he leaving

C.when he is leaving D.when is he leaving

Answer 1

【答案】A

【解析】

试题分析：句意：――我不知道他为什么要离开。――因为他得照顾他的母亲。答语是由because引出的原因状语从句，可以推测出前句用why询问原因，因此C、D错；宾语从句要用陈述句语序，B错。故选A。