Question

Ex.31. Correct the mistakes if there are any. 1. The man was standing at the bus stop for the last half an hour.
2. I remembered I haven’t paid the bill last month.
3. I called the station for an hour yesterday but no one answered.
4. She was standing near the shelf and trying to find the book on economic theory.
5. Richard tried to come in quietly but his mother didn’t sleep and was hearing him.
6. I hadn’t seen Michael for some time. I missed him greatly.
7. He used to playing the violin when he lived with his grandparents.
8. I had been played chess for 3 years before I participated in a lightning tournament five years ago.
9. I went to England to improve my English but it hadn’t helped.
10. There were a very good program on TV last night.