Use: have to / don’t have to / needn’t / mustn’t / must
We _ keep the room tidy.
You _ buy tomatoes, we have lots of them.
You _ speak louder, I can hear quite well.
Students _ be late for the lesson.
You _ do the homework on time.

1)Have to

2)Have to

3)Needn't

4)Don't have to

5)Needn't

6)Don’t have to

We are

You are

You don't

Students are

1.he is the strongest boy in our class

2.that cake is the worst

3.my book was more interesting than his book

4.he was the most handsome man in the family

5.his flat was bigger than his friend's

1.maths is easier than history for me

2.his backpack is lighter than mine

3.their camping stove is cheaper than ours

4.my torch is better than yours

eсть ковер в центре комнаты.