Rewrite the sentence, use the word given. 

You are not allowed to leave the room without permission. (mustn’t)

=> You

.

I should have write to her but | haven't had time.

I should have written to her but | haven't have time.

I should having written to her but I haven't had time.

I should have written to her but I haven’t had time.

We'll have to buy another ticket later.

We'll have buy another ticket later.

We'll have to buy other ticket later.

We'll have to buying another ticket later.

You have to look after the baby careful.

You have to look after the baby carefully.

You have to looking after the baby carefully.

You has to look after the baby carefully.

All passengers have got to exit at the next stop.

All passenger have got to exit at the next stop.

All passengers has got to exit at the next stop.

All passengers have got to exiting at the next stop.

She has to be most beautiful woman I've ever seen.

She has to be the most beautiful woman I’ve ever seen.

She has to be the most beautiful woman I've ever see.

She has be the most beautiful woman I've ever seen.