一个人的精彩的句子:英语选择题

来源:百度文库 编辑:高考问答 时间:2024/05/14 04:51:08
Children must remain ____ the school grounds during the lunch break.
A.within B.in C.on D.inside
请说明下语法,谢谢

C.
介词由后面the school grounds决定