Iusedtogotothegymthreetimesaweek,butIdon’t______anymore.A.workonB.workatC.workoutD.workfor

试题难度：困难 试题类型：单项选择题 试题内容：I used to go to the gym three times a week, but I don’t ______ any more.

A.work on
B.work at
C.work out
D.work for