9. Поменяйте определительные придаточные предложения оборотом с причастием I. 1. When

1. When I was studying advertising materials, our manager found out many interesting things. Studying advertising materials, our manager found out many interesting things. 2. He was reading the letter, when he was talking to somebody on the phone. Reading the letter, he was talking to somebody on the phone. 3. We managed to sell more goods after we had reduced the price. Having reduced the price, we managed to sell more goods. 4. Last week my secretary sent you the letter in which she pointed out the prices for our goods. Having pointed out the prices for our goods, my secretary sent you the letter last week. 5. He left after he had discussed the terms of delivery. Having discussed the terms of delivery, he left.