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Auxiliary verbs - exercises

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Auxiliary verbs - 2

Exercises: be - do - have

	It snowed a lot last year.
	What she buying now?
	Snakes have legs.
	I writing a poem.
	Many apples fallen down.
	This dog bark at night.
	you eaten yet?
	What book you reading?
	it run very fast?
	you invited Sarah?