________ I use your phone? I need to make an urgent phone call.

Student ________ copy exam answers from others.

• musn't

• have to

As the weather is perfect, I think we _____ go to the beach today.

• shall

• need to

• must

• used to

• Must I go to the toilet please?

• Have to I go to the toilet please?

• Can I go to the toilet please?

• Should I go to the toilet please?

• The students mustn´t sleep in class

• The students can sleep in class

• The students have to sleep in class

• The students must sleep in class

_____ you like to watch a movie with me tonight?

• Would

• Can

• Must

• Shall

I can't really play sports right now. I have a severe back injury.

• Obligation

• Lack of obligation

• Prohibition

• Permission

• Ability

• Children should play on this side

• Children must play on this side

• Children can play on this side

• Children must not play on this side

You ............... walk on the grass. It isn't allowed. 

• won't 

• mustn't 

• couldn't 

You _____ put on your seat belt.

• can't

• may

• must

• should