№1. John started to work in 3 hours, and at half-past three he's already done. №2. The room was in a terrible mess. I realized I had to clean it up. №3. We decided to wait a bit. №4. Nowadays, everyone understands how important international cooperation is. №5. Nelly knew nothing about the work of her literary society. №6. John works on the computer for hours on end. He screwed up his eyes. №7. Vicki and her friends were pleased when the teacher praised them. №8. On the table lay in a stack of new books. №9. Was the last week of the quarter. №10. Little sister asked Victor to buy a jar of coke.