put in each gap one model verb from the box
can can't should should't must mustn't
1 i feel tired these days. i................sleep at night
2 children ..............obey their parents
3 "You............out late at night, Lan", her father said
4 .............he swim? Yes, he's a good swimmer
5 I'm going to learn to swim
-You............. learn with an adult and obey their orders
6 We...............stay up late at night because we may get tired the next day
1-mustn't
2-should
3-shouldn't
4-can
5-must
6-can't