I prefer to .A. sing; danceB. singing; dancingC. singing; danceD. sing; dancing

问题补充：

I prefer to .

A. sing; dance

B. singing; dancing

C. singing; dance

D. sing; dancing

答案：

A. sing; dance

(答案→)B. singing; dancing

C. singing; dance

D. sing; dancing

解析：本题主要考查动词短语prefer...to...的用法，prefer...to...“宁愿做...而不愿做...”用作宾语的可以是名词、代词、或动词-ing形式，to是介词，不是动词不定式符号，故选B。