A child is sitting in a chair that hangs from a massless rope.The rope hangs over a frictionless tree branch and runs back into the child's hands.The combined mass of the child and the chair is 32.1 kg.The child's older sister offers to help pull the

The child _______ on the chair and eating a cake.A.siting B.sitting C.ia sitting D.is sat There is a child sitting behind the wall.( 划线提问这是a) The child ____on the chair and eating a cake .A sitting B is sittingwhy? There is a child sitting behind thewall.（划线提问（划得是a））特急 There is a child sitting on the chair(复数句） There is( a )child sitting behind the window.括号里提问 I ___(know) him since he ___(is)a child 1.We can see(a nice skateboard).(划线提问）2.There is（a)child sitting behind the wall.(划线提问） A child is sitting in a chair that hangs from a massless rope.The rope hangs over a frictionless tree branch and runs back into the child's hands.The combined mass of the child and the chair is 32.1 kg.The child's older sister offers to help pull the Tom is sitting between you and________ .（I）We have a _______ every week.(meet) Susan is sitting between ( ) A.Jane and me B.Jane and I a cousin is your ( )child Do I have a child I'm a blue child. 填入适当的介词或副词Look!The child is sitting _____ his parents. a child is a person who miss a child 翻译 the boy is sitting on a chair there is a big sitting room翻译