1. Hurry up the bus (to come) I (not / to want) to miss it.
2. He usually (to come) to see us on Sundays.
3. Where is the engineer? – He (to test) new equipment.
4. They (to spend) much time outdoors.
5. What you (to do) here? – I (to wait) for my friend.
6. He (to speak) French? – Yes, he (to speak) it quite fluently.
7. She (to write) letters to her mother every week.
8. You (to hear) anything? – I (to listen) hard, but I (not/to hear) anything.
9. They (to travel) in South America now.
10. I (to believe) you (to know) Chemistry well.