hoàn thành câu sau:
1He tries (stop)______ (smoke)______ , but he can't.
2. The rain prevented us from ( play) ________ football.
3. I am used to (get)_______ up early in the morning.
4. He went on (speak) _______ although none was paying attention.
5. John forgot (turn)________ off the lights when he went to bed.
6. I really enjoy (stay)____ at home and (watch)______ TV.
7. (Get)______ enough sleep is very important for your health.
8. (Smoke)_______ is not allowed inside this building.
9. (Walk)______ along the beach is a great way to relax.
10. I hope (study)_______ better on the next school year.
11. Can you (afford) ______ to buy that car?
12. Don't forget (send)_____ me a letter.
13. We started early so as to avoid (get)______ traffic jam.
14. You should practise (speak)_______ English every day.
15. Mr James agreed (sign)____ the contract with our company.
16. The teacher caught us (cheat)______ during the test.
17. I can't help (feel)_______ I've forgotten something.
18. My sister started (work)______ as a teacher in 1999.
19. Can you teach me how (do)_______ this exercise?
20. We've arranged (meet)_____ Lan at the restaurant at night.