1. A student can't learn (spell) without being taught.

2. Have you ever watched people (try) to catch fish ?

3. If you dislike (peel) onions, try wearing glasses and holding them under water while doing so.

4. On (hear) her speak everyone took her for a foreigner.

5. I promise to give you an opportunity to ask questions before (leave) the classroom after listening to my lesson.

6. It's stupid to risk (break) a leg with those mini-scooters.

7. I must remember (remind) the students that this grammar point needs revising.

8. We mustn't risk (be) late for the concert.

9. I don't want (miss) hearing the choir again.

10. I advise you to wait before deciding (accept) that position at the supermarket.