Sorry, you need ... wear special shoes in the gym.

You have no PE on Friday so I needn't ... bring my outdoor kit.

The bus leaves at 8. Do we really need ... arrive at the bus station at 7.30?

You don't need ... stay after classes if you don't want.

You needn't ... join all the clubs. One or two is enough.

You ... pay for the club. It's free.

You ... bring your laptop because we have enough computers in the IT room.

I'm sorry. You ... stay after classes today.

We ... wear special clothes in the Chemistry lab because we do experiments there.

I think classroom rules ... to be clear and few in number.