充值活动已开启,快来参与吧 关闭充值活动
当前位置: 小学英语 / 词类 / 动词 / 情态动词
  • 1. — May I swim in the lake, Dad?

    — No, you     . Look! Here is a notice" No Swimming!"

    A . may not B . mightn't C . mustn't D . needn't