domingo, 24 de febrero de 2013

Grammar: Present Perfect (Exercises)

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

http://www.isabelperez.com/happy/tenses/exercises/present_perfect_2.htm

http://www.isabelperez.com/happy/tenses/exercises/present_perfect_mistakes.htm


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