是sit in the armchair还是sit on the armchair?

是sit in the armchair还是sit on the armchair? 是sit on the chair还是sit in the chair 是sit in the sofa 还是sit on the sofa? Sit on the grass.还是 Sit in the grass? 我坐在沙发上是 I sit in the sofa.还是 I sit on the sofa. armchair 坐在椅子上用sit on the chair 还是sit in the chair 做在椅子上是 还sit on the chair 还是sit on the chair The one in the armchair near the television.翻译 sit ()the back row用in还是on为什么 是sit in a chair还是sit on a chair? _______ one of the children _______ in the armchair now?