1.
I went to the cinema yesterday.
I was going to the cinema at four o'clock yesterday.
I was going to the cinema when you met me.
I was doing my homework when mother came home.
I did my homework yesterday.
I was doing my homework at six o'clock yesterday.
I did not play the piano yesterday. I wrote a letter to my friend.
I wasn't playing the piano at four o'clock yesterday. I was reading a book.
2.
When I came home, my little sister was sleeping.
When Nick came home, his brother was playing with his toys.
When mother came home, I was doing my homework.
When father came home, Pete was sleeping.
When mother came home, the children were playing on the carpet.
When I went to school, I met my friend.
When we went to the cinema, we met grandmother.
When grandmother went home, she saw many children in the yard.
When I was playing in the yard, I suddenly saw my old friend.
When Nick was running about in the yard, he fell.
