问题补充:
--- Does Susan like singing?
--- Yes, she does. But she prefers to .
A. to dance; sing
B. to dance; singing
C. dancing; sing
D. dancing; singing
答案:
A. to dance; sing
B. to dance; singing
C. dancing; sing
(答案→)D. dancing; singing
解析:句意:苏珊喜欢唱歌吗?是的,她喜欢。但比起唱歌她更喜欢跳舞。Prefer doing A to doing B比起做B,更喜欢做A,所以选D。