must/ mustn`t

You must _______ attention at school.

• to pay

• pay

• paying

You must _______ quiet in the library.

• be

• to be

• is

You mustn't _______ across the road.

• run

• running

• ran

We _______ shout in class.

• mustn't to

• must no

• mustn't

She _______ help her brother with his homework.

• must to

• must

• musts

You must _______ after your pets.

• looking

• to look

• look

We mustn't _______ a mess when we paint!

• to make

• make

• made

He _______ keep his bedroom tidy.

• must

• must to

• musts

____I tidy my room now?

• Do

• Must

• Mast