Say in which sentences we can't use could.

### Упражнение 7 Мы не можем использовать "could" в предложениях, где описывается единичное достижение или конкретное действие, завершившееся успехом в прошлом (здесь употребляется "was/were able to"). Ответ: 2) We tried to open the door and were able to do it at last. (Мы пытались открыть дверь и наконец смогли это сделать — результат усилия). 3) They were not able to build a new garage. 4) She was able to make lunch in ten minutes and we didn't go hungry. 5) We didn't know the address, but we were able to find the hotel. 6) It was dark outside, but Ann was able to take pictures of the palace. 7) That summer was very cold, but we were able to grow tomatoes in our garden. 8) They were not able to decide where to go. ### Упражнение 8 1) Bob can't answer difficult questions now, but when he is older, he will be able to answer difficult questions. 2) Bob can't fly a plane now, but when he is older, he will be able to fly a plane. 3) Bob can't go to university now, but when he is older, he will be able to go to university. 4) Bob can't work on the computer now, but when he is older, he will be able to work on the computer. 5) Bob can't have a bank card now, but when he is older, he will be able to have a bank card. ### Упражнение 9 1) Everybody is able to see these wonderful paintings. 2) Jill wasn't able to wait any longer. 3) They weren't able to change their plan. 4) We are able to give them a driving lesson. 5) He isn't able to speak English. 6) He was able to ride a bike very well when he was younger. ### Упражнение 10 1) We were able to find her house because I remembered her address. — Мы смогли найти её дом, потому что я запомнил её адрес. 2) I forgot his telephone number but I was able to talk to him. — Я забыл его номер телефона, но смог с ним поговорить. 3) Jill could play tennis fairly well when she was at school. — Джилл могла довольно хорошо играть в теннис, когда училась в школе. 4) Richard was a very good sportsman. He could win any game easily. — Ричард был очень хорошим спортсменом. Он мог легко выиграть любую игру.