Только используя местоимение Я, правильно я поняла?
I was in Moskow two days ago.
I was doing homework, when you call me.
I was waiting for him
I wasn't reading this book from 10 till12 o'clock
I was in country all summer.
I was working in the garden all day
I was returning to home last weekend.
I wasn't playing football all week.
подойдет?