Choose the word in each group that has the underlined part pronouned differently from the rest.
1. a.Passover b.Easter c.Christmas d.December
2. a. coal b.gas c.wind d.oil
3.a.water b.dump c.land d.air
4. a.bored b.joyful c.happy d.glad
5. a.clean b.fresh c.dirty d.tidy