The policeman is still not sure ______ the young man kil Wap版

试题详情及答案解析

The policeman is still not sure ______ the young man killed himself or not.

A．if

B．that

C．whether

D．weather

答案：C

试题解析：句意：那个警察仍然不确定那个年轻人是不是自杀的。本句中有一个宾语从句，weather…or not，为固定词组，意为是否……其它引导词不能和 or not连用。故选C。
考点：考查宾语从句和固定词组