Past simple: I was in London last year. Did he do his assignments? Where did Emily Buy her computer? When was the first wheel invented? How much did your parents pay for your new flat?
present simple: I meet schoolmates everyday. Sometimes I read interesting books. Often i have some free time. I don`t like pepper. Everybody like sport and am I.
present continuous: Harry up! We are waiting for you? They are writing composition. We aren`t doing exercise. How far are you running with your dog? I am watching TV at the moment.