The floor is dirty because he walked on it with his shoes on.
He ......... do so again.
a- may
b- should
c- must
d-shouldn't
You….have different bins for food waste. It's necessary.
a- must
b- may
c-shouldn't
d- mustn't
There's a lot of dust on the bookshelf in her bedroom. She
.... clean her bedroom more often.
a- needn't
b- shouldn't
c- mustn't
d-should
You .... eat in the library because you may drop some food there.
a- won't
b- should
c- shouldn't
d- must
You ..talk when the teacher is explaining the lesson.
a- don't
b- won't
c- mustn’t
d- needn't
You……eat food after it falls on the floor.
a- needn't
b- won't
c- mustn't
d- shan't
