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Here are some simple exercises aimed at 3rd or 4th ESO about past simple and present perfect using for, since; already, still and yet and never, ever and before. 

past-simple-vs-present-perfect-grammar-drills_143946.docx

PAST SIMPLE VS. PRESENT PERFECT 

past-simple-vs-present-perfect

Here are some simple exercises aimed at 3rd or 4th ESO about past simple and present perfect using for, since; already, still and yet and never, ever and before…