1.Andrew worked in USA defore he came to Australia
2.I came at four but Paul left by that time
3.If he doesnt leave, he will miss the show
4.I have bought tickets for the musical. Here they are.
5.Look at the timetable.When is the Sapsan arriving?
6.Have you bought the train tickets? When are we arriving?
7.By 7 o`clock yesterday we connected the two systems.
8.I have collected coins sience last year