Решите пожалуйста срочно - даю 40 баллов
Open the bracket using the appropriate tense forms. (Раскройте скобки, употребляя глаголы в нужном времени).

1. He (to begin) to write his composition at 2 o'clock. It is already eleven, and he still (to write) it. He says he (to finish) it by midnight.

2. Mary was sitting on the ground. She was out of breath. She (run).

3. When I (to walk) back home I (to realize) that I (to leave) my keys in the office.

4. They (to float) down the river for many hours before they (to reach) the island.

5. By the end of the next year she (to work) here for 25 years.