E.S.O.: Present perfect/ past simple

Log onto the following web sites and do the exercises on the present perfect and past simple:

http://www.ego4u.com/en/cram-up/grammar/present-perfect-simple

http://www.isabelperez.com/happy/tenses/pres_perfect.htm

http://www.englishpage.com/verbpage/verbs5.htmhttp://www.englishpage.com/verbpage/verbs6.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect.htm

http://www.ego4u.com/en/cram-up/grammar/simpas-preper/tests?test1

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