What the doctors really doubt is ______ my mother will recover from the serious disease soon. A．whe...
2023-01-25 12:00:23 63次 2010年甘肃省陇南市高二下学期期末考试英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
What the doctors
really doubt is ______ my mother will recover from the serious disease
soon.
A．when B
how C
whether D why
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