问题补充:
I don’t doubt she can do it well, but I doubt she is willing to do it.
A. that; if
B. that; that
C. if; if
D. if; that
答案:
(答案→)A. that; if
B. that; that
C. if; if
D. if; that
解析:句意:我不怀疑她能做好这件事,但是我怀疑她是否愿意做这件事。Doubt前有否定词时后面用that引导,而前面没有否定词时,要用whether或if或特殊疑问词来引导,表达疑问;故选A。