【題目】What the doctors really doubt is________ my mother will recover from the serious illness soon.

A．when B．how C．whether D.why

【答案】C

【解析】

試題分析:考查表語從句。句意：醫(yī)生們真正懷疑的是我媽媽是否會很快從這次嚴重的疾病中恢復過來。主語從句“What the doctors really doubt”表示的是不確定的事情，ABD三項與上下文含義不一樣。只有C項符合上下文。故C正確。

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