题目内容
10. (2013 •天津) 一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
10. A
10. A考查宾语从句。宾语从句的语序应用陈述语序, 排除B、D;由答语中的because知上句中的宾语从句 应用why引导。故选A.
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