.free time填介词,用in还是on?

.free time填介词,用in还是on? my free time前用何介词(on?in?by?) free time 前用ON还是IN? free time 前用ON还是IN? 用英语怎么说“在空闲时间”是用“in free time’还是“at free time”？ 是on free time 还是in free time “在你的空闲时间里”用英语怎么说?是in your free time还是on your free time free time的前面应该用什么介词? This swater is too big______my brother GINE likes listening______pop music in her free time用介词填1This swater is too big______my brother 2GINE likes listening______pop music in her free time 3we will have a good time_____the picnic 4who do you any time 前加介词吗?如加,加哪个介词?这句话：I will be free (in/at/不填) any time on Monday.先谢LS两位，不过，到底哪个~ i like reading some novels for my free time 好还是in my free time 好 in one's free time还是 at one's free time Stacey spends all her free time _____ making music.用in?用on?还是用with? what do you do in your free time 怎么回答用一般时态还是进行时态 英语：___________ (填介词) the menu (在菜单中/上) 用介词on还是in one's free time前面介词是什么? 填介词:Look at the picture _____ the sky.填in 还是 o填介词:Look at the picture _____ the sky.填in 还是 of .请说明理由 括号内填什么Polly enjoys ()the guitar in a band in her free time.