sit on the floor为什么不可以说sit on floor?the在这里做什么用?还有,为什么不可以说What`s problem?

sit on the floor为什么不可以说sit on floor?the在这里做什么用?还有,为什么不可以说What`s problem? 翻译sit on the floor the water spread over the floor为什么不可以用ON the floor Don't litter the floor为什么 the floor前不加on? we ——sat on the floor for our music lessons and Vanessa liked to sit on my lapApartlyBhardlyCnearlyDmostly选什么为什么 We love to sit on the floor and look out at the beach and the sea The students sit in a c_____ on the floor with their teacher in the center填空 sit,floor,often,on,and,out,look,beach,the,at,the,i连词成句 He saw linda _____(sit) on the floor when he walked into the classroom. The floor above the ground floor is the first floor.为什么不用on 用above It's nice______(sit)on the floor and______(chat)with you. The chair is comfortable to sit on/还是to be sat on?如果是to sit on 的话请解释下为什么不选后者 on the floor On The Floor 歌词 on the floor是什么意思 the chair looks rather hard ,but in fact it is very comfortable__A．to sit B．to sit on C．sit D．be sat on为什么不选D．be sat on?是椅子被人坐啊? Sit on the edge of _____ bed _____ minute before putting your feet on the floor.A./; a B.the; a C.the; the D./; the Where`s the floor?It`s___ the floor.是on 还是in?为什么?