I feel very___when I sit on a hard chair

I feel very___when I sit on a hard chair I found a chair to sit on the chair is too hard to sit on.改为同义句 the chair i I sit (at/on)the chair I found a chair to sit I need a chair to sit on.I need a pen to write with. I haven't got a chair ______.A.to sit B.to sit on 选择哪个 并且讲解一 i haven't got a chair( ) a:to sit b:to sit on c:for me to si 搬椅子来坐 I brought a chair by myself to sit on? I sit on a chair .改为一般疑问句,否定句,肯定回答,和否定回答,还有 英语高手进来一分钟!I sit on a chair成分分析 sit in a chair sit on区别