Ejercicios de Ingles
http://www.englishpage.com/verbpage/simplepresent.html
Present Simple Exercises
http://www.isabelperez.com/happy/tenses/exercises/present_1.htmhttp://www.isabelperez.com/happy/tenses/exercises/present_2.htm
http://www.isabelperez.com/happy/tenses/exercises/present_3.htm
http://www.isabelperez.com/happy/tenses/exercises/present_4.htmhttp://www.isabelperez.com/happy/tenses/exercises/present_5.htm
http://www.isabelperez.com/happy/tenses/exercises/habits.htm
http://www.isabelperez.com/happy/tenses/exercises/present_4.htmhttp://www.ego4u.com/en/cram-up/grammar/simple-present/form
http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises
http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?02http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?03
http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?04http://www.ego4u.com/en/cram-up/grammar/simple-present/form/exercises?05
Present Continuous (Explanation)
http://www.ego4u.com/en/cram-up/grammar/present-progressive
http://www.ego4u.com/en/cram-up/grammar/present-progressive/formPresent Continuous (Exercises)
http://www.ego4u.com/en/cram-up/grammar/present-progressive/form/exercises
http://www.ego4u.com/en/cram-up/grammar/present-progressive/form/exercises?form02http://www.ego4u.com/en/cram-up/grammar/present-progressive/form/exercises?form03
http://www.ego4u.com/en/cram-up/grammar/present-progressive/form/exercises?form04http://www.ego4u.com/en/cram-up/grammar/present-progressive/form/exercises?form05
Past Continuous (Explanation)
http://www.ego4u.com/en/cram-up/grammar/past-progressive
Past Continuous (Exercises)http://www.ego4u.com/en/cram-up/grammar/past-progressive/exercises?02
http://www.ego4u.com/en/cram-up/grammar/past-progressive/exercises?03
http://www.ego4u.com/en/cram-up/grammar/past-progressive/exercises?04...
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