You............open this door! There is a dog!
You mustn't open this door! There is a dog!
You.............help me if you don't want to.
You don't have to help me if you don't want to.
The match is free to watch. We................buy the tickets.
The match is free to watch. We don't have to buy the tickets.
I............ eat something. I'm very hungry!
I must eat something. I'm very hungry!
The doctor said that she.............take more vitamins.
The doctor said that she has to take more vitamins.
You................. be late at home!
You mustn't be late at home!
Do you...............do it now?
Do you have to do it now?
To become a doctor you................go to medical school.
To become a doctor you have to go to medical school.
People.................use their mobile phones in planes. They may crash.
People mustn't use their mobile phones in planes. They may crash.
I...........do it today. I have a lot of time.
I don't have to do it today. I have a lot of time.
YESTERDAY I............clean my room. It was so drity.
YESTERDAY I had to clean my room. It was so drity.
When you see this sign. You.............use your mobile phone.
When you see this sign. You mustn't.use your mobile phone.
When you see this sign. You.............stop.
When you see this sign. You.............stop.
She didn't do it today so she.................do it tomorrow. It is the final day.
She didn't do it today so she will have to do it tomorrow. It is the final day.
Yesterday my mum told me to clean my room but i.....................do it because my sister did it.
Yesterday my mum told me to clean my room but i didn't have to do it because my sister did it.
