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．whether he is leaving

D．whether is he leaving

Answer 1

【答案】A

【解析】

试题分析：宾语从句要用陈述句语序，先排除B和D；再结合答语可知引导词应是why。故答案为A。