Use the Present simple or the present conditions
1. He (not to work), he (to watch) the TV programme.
2. Do you know what time we (to arrive) at the frontier?
3. My elder sister (to have) a music lesson. She always (to have) a music lesson on Friday.
4. Water (to boil) at 100 degrees Centigrade.
5. Why you (to walk) so fast today? You usually (to walk) quite slowly. - I (to hurry). I am afraid to miss the train.
6. Father (to read) a newspaper. He usually (to read) something before going to bed.
7. He (to take) his English lesson; he always (to take) his lessons in the morning. 8. I know that he (to leave) for the village tomorrow.
9. What you (to read) now? I (to read) stories by W. S. Maugham.
10. Mother (to cook) breakfast in the kitchen. She always (to cook) in the morning.
11. Where is John? He (to prepare) his lessons; he usually (to prepare) it at this time.
12. I can't fetch you because I no longer have my car. I (to sell) it tomorrow.
13. Why you (to speak) so fast? You (to make) a lot of mistakes.
14. Who you (to wait) for? - I (to wait) for Ann, we must leave in ten minutes.
15. I (not to understand) your remark.
16. The next plane (to leave) Salt Lake at six o'clock. You can catch it yet.
17. Go and see what the children (to do).
18. Who you (to wait) for? I (to wait) for my sister.
19. Loren (to return) from his honeymoon tomorrow and I'd like to see him before the meeting on Friday.
20. (not to go out), it (to rain) heavily.
21. You (to know) that we need hundreds of thousands and even millions of skilled workers. 22. You (to understand) the use of the Present Indefinite quite well?
23. Cuckoos (not to build) nests. They (to use) the nests of other birds.
24. You usually (to go) through the park? – Not usually, it's only today that I (to go) here.