C2 - modals

It's highly likely that Stephen was listening. MAY >>> Stephen ... listening.

It's not possible that Andrew is half Spanish. (BE) Andrew .......... half Spanish

I'm sure Harry didn't spend the whole evening studying for his French exam. CAN'T >>> Harry ... his French exam.

The most likely situation is that they awarded Grandpa the medal during the war. MUST >>> Grandpa ... during the war.

I believe business is now experiencing a severe recession. MUST >>> Business ... recession now.

It was wrong on you to count on Mike's support. SHOULD >>> You ... Mike's support.

Is it a good idea to apply for the junior accountan'ts post? SHOULD >>> ... junior accountant's post?

Aunt May cooked chicken soup for us, even though we told her we were eating out. NEEDN'T >>> Aunt May ...

It wasn't very polite of you not to notify them about the change of plans. COULD >>> ... about the change of plans.

It's possible that Jack didn't go to Paris after all. NOT >>> Jack ... to Paris after all.