the teacher didn't sit down until he saw every student already had a chair____A to sit B to sit down C to sit at D to sit on 原因是什么呢 其他选择为什么不能选

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/14 17:12:11

the teacher didn't sit down until he saw every student already had a chair____
A to sit B to sit down C to sit at D to sit on
原因是什么呢 其他选择为什么不能选

have a chair to sit on.这里考的是介词.sit on a chair.用on才对.