Contents - Present and past

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Present and past
Unit 1 Present continuous (I am doing)	Exercise1
Unit 2 Present simple (I do)	Exercise 2
Unit 3 Present continuous and present simple (1) (I am doing and I do)	Exercise 3
Unit 4 Present continuous and present simple (2) (I am doing and I do)	Exercise 4
Unit 5 Past simple (I did)	Exercise 5
Unit 6 Past continuous (I was doing)	Exercise 6

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