in one is free time 中的time需加s吗

be free have time in one is free timebe free have time in one is free time in one is free time 中的time需加s吗 in one's free time造句 in one's free time的中文 in one's free time还是 at one's free time in one’s free time的同义句 in one's free One is called free it is fun _______music in the free time? Her h-- is listening to music in her free time.Her h is listening to music in her free time. In one's free/spare People enjoy doing in one's free time请帮我解释一下谢谢 He spend all his free time in one of his four glass-houses是什么意思 Enterprise Management and personnel management,Which one do you think is more useful to learn?I want to study Enterprise Management or Personnel Management in my free time,but I don't know which one is more useful. one's free time前面介词是什么? 是on free time 还是in free time My grandfather is in his -------(sixty),but he still studies English in his free time. one's leisure _____ one's leisure time 有什么区别?____ one's spare timeone's leisure _____ one's leisure time 有什么区别?____ one's spare time _____ one's free time我看到有的是全at,有的是in one's spare time,那么 at one's free ti