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Содержимое статьи:

1. I went to the cinema yesterday.
2. I went to the cinema at four o'clock yesterday.
3. I was going to the cinema when you met me.
4. I did my homework the whole evening yesterday.
5. I was doing my homework when mother came home.
6. I did my homework yesterday.
7. I did my homework from five till eight yesterday.
8. I was doing my homework at six o'clock yesterday.
9. I was not playing the piano yesterday. I was writing a letter to my friend.
10. I was not playing the piano at four o'clock yesterday. I was reading a book.
11. He was not sleeping when father came home. He was doing his homework.