The past of 'leave' is 'left'., What's the past of 'leave'?, Yes, the teacher left her book here after the last class., Did the teacher leave her book here after the last class?, No, I don't have a big kitchen., Do you have a big kitchen?, Yes, there is a fridge in my kitchen., Is there a fridge in your kitchen?, No, it isn't warm inside a fridge. It's cold., Is it warm inside a fridge?, Yes, I sometimes use a microwave., Do you ever use a microwave?

exercise 2

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