2016-2017学年 外研版 选修6 Module1 Small talk grammar 课件 (4)
2016-2017学年 外研版 选修6 Module1 Small talk  grammar 课件 (4)第3页

1. Stop! You ____________ give yellow flowers to the host! It’s unlucky! 2. Don’t worry. You ___________________ eat anything you don’t like.

mustn’t, can’t

don’t have to, needn’t

Complete the sentences with verbs to express obligation or lack of obligation.