May vs might

I was just wondering whether you be able to help me.

_____ God have mercy on your soul.

You_____ well be right.

I told them I______ go if I felt like it, but wasn’t sure.

Students _____ only borrow four books.

The examiner says we _____ leave when we’ve finished.

It________ be very expensive, but it’s much better than the others.

I just ______ accept your offer.

You _______ try asking her for help - She knows her stuff.

You _____ have told me earlier!