that they (know) this rule well. They (hope) they (will make) no mistakes in the paper.

3. The expedition (has cover) hundreds of kilometres, but they are still far from their destination.

4. Are you (going) to Great Britain next year?

5. Yesterday Nick (said) that he (read) much during his summer vacation.

6. At the age of twenty my father (was combining) work and study.

7. A great number of students (were studying) in the reading room when I (entered) it last night.

8. The storm (was raging) the whole night, and the sailors (tried) to do their best to save the ship.

9. Mike's friends could hardly recognize him as he (had changed) greatly after his expedition to the Antarctic.

10. When I (entered) the hall, the students (were listening) to a very interesting lecture in history.