Mary Merry Marry

The English language test below had a question about how to pronounce these words. Having lived in Mass., I know they are pronounced three different ways. Back then I practised & practised to get the distinction down but being back here in New York, I've slipped into pronouncing them all the same. I need to work on this again. From the net, here's how to remember them for future use:
Only people from the Northeast tend to pronounce all three words with a different first vowel:

• "merry" = /me+ri/
• "Mary" = /Meu+ri/
• "marry" = /mari/

Confusing? Not if you learn to listen carefully.