предложения оборотами с герундием, поставив,
где требуется, соответствующий предлог:
1. When I received the telegram, I started home
2. You may avoid many mistakes, if you observe
3. When he entered the room, he greeted everybody
4. After they had sat there a few minutes, they
continued their journey.
5. While he was copying the text, he made a
6. I am thankful that I have been stopped in
7. I remember that I have read this book.
8. After she had tried all the keys on the ring,
she finally found the right one.
9. He is proud that he has never been beaten
at chess by his fellow students.
10. I don't remember that I have ever come across
his name before.
11. His arm was not in a sling and showed no
sign that it had been injured.
12. You can improve your knowledge of English
if you read more.