Passive modals - Rewriting

Perhaps Susan knows the address. (may)

--> Susan __________________________.

It's possible that Joanna didn't receive my message. (might)

--> Joanna ________________________ my message.

It was not necessary for Nancy to clean the flat, so she woke up late this morning. (didn't)

--> Nancy _____________________ the flat.

I am sure you were surprised when you heard all the news (must)

--> You _________________________ when you heard the news.

Someone almost certainly broke the window on purpose. (must)

--> The window ____________________ on purpose.

I am sure that the cat is in the house. (must)

--> The cat _________________.

It is possible that one of the men died on the mountain. (may)

--> One of the men _________________ on the mountain.

It was necessary for me to bring my passport, but I forgot. (have)

--> I _______________.

It wasn’t necessary for you to do all this work but I didn't know that. (needn’t)

You ____________________ all this work.

I am sure that John is not the thief. (can’t)

--> John _______________.