The Present Simple

The Present Simple:
Present Simple: use, form and exercises
Present Simple: affirmative sentences
Present Simple: negative sentences
Present Simple: easy questions
Present Simple: easy answers
Present Simple: habits and routines

More grammar:
http://www.isabelperez.com/grammar.htm

More theory and exercises in my blog:
http://pilarsclassroom.blogspot.com.es/search/label/Present%20Simple

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