have children sit on their knees on the chair怎么翻译?

have children sit on their knees on the chair怎么翻译? we have enough chair for everyone to__ A:sit B:sit on C:sit in D:sit atsit on 和sit in都有什么区别? 关于sit的用法I have no seat to sit on这里为什么要用个on,什么时候不用on,直接说 I have no seat to sit 填空Many children like to sit on a s__ in the park.it is very interesting. we have enough chair for everyone to__ A:sit B:sit on C:sit in D:sit at怎么选?为什么?sit on 和sit in都有什么区别? I have not decided which seat ______.A.to sit B.is to sit C.to sit on D.is for sitting理由？ 翻译：That can have an improtant effect on the children. Does television have a bad or good effect on children? do children have a good time on weekends意思 sit on your talent sit on our talent sit on my rt sit on什么意思 sit in 与sit on 的区别? sit on与sit in的区别 Children often have a good time on Children's Day.（改为同义句） Children often have a good time on Children's Day.改为同义句是? Children often have a good time on Children's Day的同意句