He didn't tell me ＿＿there was a meeting this afternoon or not.
问题描述：
He didn't tell me ＿＿there was a meeting this afternoon or not.
A.when
B.what
C.if
D.whether
答
我选D
原因是后面有or not所以我记得不能选if
Whether好像更强调否定的意思