5 oraciones en present perfect y 5 en past perfect plis?

Presente perfect

Ihave beento colombia

she has learned to speak spanish

I have nort slept in the past two days

I am not hungry because I have eaten an apple

I have bought acar

past perfect

I lost so much weight because I had begun exercising

he stayed up all night because he had received a lot of homework

I had met him before you introduced us

you said you had bought this dress in the mall

he had not studied Italian before he move to italy.