I. Вставьте правильную форму: can, could, was/were able to, will be able to.

Решение:

1. I could swim very well. I learned it when I was 5.
2. She was very tired, but she was able to finish her project before midnight.
3. He can play chess when he was six, but now he is a champion.
4. If we study hard, we will be able to pass the exam next week.
5. The music was very loud, so I couldn't hear what he said.

Ответ: could; was able to; can; will be able to; couldn't.