CONIUGA IL VERBO TRA PARENTESI AL TEMPO GIUSTO SCEGLIENDOLO TRA PRESENT PERFECT E PAST SIMPLE Esempio: 
I   (to be) very shy when I was young > I WAS very shy when I was young.

1) Last night I (to dream) about your new car.
2) We (see) a wonderful film last week.
3) I (to know) Sam for twenty years. (!Duration form!)
5) They (to build) this tower in 1965.
6) (you/ever/to be) to Mexico?
7) (you/ to see) Tom this week?
8) They (to play) tennis when they were at college.
9) She (to be) in London last night.
10) There (to be) many people at the party yesterday.

Qui sotto un link dove puoi svolgere altri esercizi in autocorrezione
https://www.tuttoinglese.it/present-perfect-simple-vs-past-simple-1.html