Question

(經典回放)What the doctors really doubt is ________ my mother will recover from the serious disease soon．________

[　　]

A．when

B．how

C．whether

D．why

Answer 1

答案：C
解析：

句意為：“醫生真的懷疑我媽媽是否能很快從重病中恢復過來。”“________ my mother will recover from the serious disease soon．”是一個表語從句。根據doubt可知，所懷疑的應是是否能治好病，所以要填whether。