Study the examples. Then, rewrite the sentences using the modals in bold. He must have left by now. ( I'm sure he left.)
They are late. They may / might have lost their way. ( It was possible. )
He can't have eaten the whole cake. (I'm sure he didn't do it.)
You should have booked a table. (but you didn't. )
1. I'm sure she didn’t do the shopping.
2. I'm sure Mum bought us some doughnuts.
3. They wanted to buy a cake dor his birthday but they didn't.
4. It was possible that she had left the invitation at home.
5. I'm sure the decorations cost a lot.
6. He isn't feeling well; he ate too many sweets.
нужно, заранее