Question

【题目】—I don’t know ________.

—Because he has to look after his mother.

A.why he is leavingB.why is he leaving

C.whether he is leaving

Answer 1

【答案】A

【解析】

句意：——我不知道他为什么要走。 ——因为他必须照顾他的母亲。

考查宾语从句。根据“Because he has to look after his mother.”推测可知：上文应该是问原因，故引导词应该用why，所以排除C；宾语从句应该用陈述语序，即主语+谓语，所以排除B。故选A。