In football, players must / mustn't carry the ball.
mustn't
Lifeguard must / mustn't be scared of water.
mustn't
your brother / play / the piano / in the concert / next week?
Is your brother going to play the piano in the concert next week?
Use superlative: Jon / tall / boy / in my class.
Jon is the tallest boy in my class.
We are not pleased. We've got ... homework to do tonight.
a lot of
That old woman wants to cross the road. We ... help her.
should
Chaien / bad / singer / in our class.
Chaien is the worst singer in our class.
