问题
选择题
What the doctors really doubt is ________ my mother will recover from the serious disease soon.[ ]
A. when
B. if
C. whether
D. what
答案
答案：C
搜题请搜索小程序“爱下问搜题”
What the doctors really doubt is ________ my mother will recover from the serious disease soon.[ ]
A. when
B. if
C. whether
D. what
答案：C