Example: When you cross the street, be careful at the crossroads. — When crossing the street, be careful at the crossroads.
1. When he was lying he spoke more quickly than when he was telling the truth. 2. She stood in front of the mirror as if she were speaking to herself. 3. She screamed as though she had been badly hurt. 4. He is a quiet man. He never hurries unless he is pressed for time. 4. While I was waiting for you, I was looking through newspapers and magazines. 5. When he was asked about it, he could say nothing. 6. When the article is translated, it wirH be typed. 7. While I was crossing the street yesterday, I saw an accident. 8. A promise accounts so little till it is kept. 9. When he was a student he used to study at the library. 10. He was hesitating whether for take the step, which if it was mistaken, could put him to trouble.