i haven't got a chair( ) a:to sit b:to sit on c:for me to sit d:for sitting

i haven't got a chair( ) a:to sit b:to sit on c:for me to sit d:for sitting
i haven't got a chair( ) a:to sit b:to sit on c:for me to sit d:for sitting

i haven't got a chair( ) a:to sit b:to sit on c:for me to sit d:for sitting
正确答案是B
to在这里表目的,sit on表动作.

A