Tom likes .He is a good .A. sing; singB. sing; singer C. to sing; singingD. singing ;singe

问题补充：

Tom likes .He is a good .

A. sing; sing

B. sing; singer

C. to sing; singing

D. singing ;singer

答案：

A. sing; sing

B. sing; singer

C. to sing; singing

(答案→)D. singing ;singer

解析：句意：汤姆喜欢唱歌。他是一个好的歌唱家。like to do/doing sth. 喜欢做某事；故第一空排除AB两项。singer“歌手，歌唱家”，位于不定冠词a后用单数名词。故选D。