She loves the song because her mother was once the singer of it.A. in practiceB. in theor

问题补充：

She loves the song, because her mother was once the singer of it.

A. in practice

B. in theory

C. in particular

D. in reality

答案：

A. in practice

B. in theory

(答案→)C. in particular

D. in reality

解析：考查词组：A. in practice实践上，B. in theory理论上，C. in particular尤其，特别，，D. in reality事实上，句意：她特别喜欢这首歌，因为她妈妈曾经是唱这首歌的歌手。选C。