Question

una historia en present perfect y past participle

Answer 1

During these days I have visited my grandma twice a week, Years ago I had visited her just once a month or sometimes I din´t visit her. I have eaten too well during these days, my grandma is a nice cooker! She has cooked cookies all the days for me :) 

Hope this helps you, I didnt understand if you want both verb tenses in the same story so I mixed them, Good luck in your English classes 
Have a nice day.