Question

Сделайте срочно нужно

Answer 1

We have bought a new car
I have already done my home work 
My friend has read this book
Have you ever been to London?
They have finished their work
Mom has cooked the breakfast
My sister has already gone
Все предложения в Present Perfect, так как я предполагаю, что они имеют отношение к событиям в настоящем. 

Answer 2

1. We have bought a new car.
2. I have already done my homework.
3. My friend has read the book.
4. Have you ever been to London?
5. They have finished their homework.
6. My mother has cooked breakfast.
7. My sister has already gone.