Practice Makes Perfect

29 
Prepositions: To and At
29-1 
1. Please explain this to me. 2. The girls ate cake at the birthday party. 3. We saw Tony and his brother 
at the restaurant. 4. I sold my car to Mike. 5. I bought a muzzle for my dog at the pet store. 6. The 
funeral was at four o’clock. 7. We fed the apple cores to the raccoons. 8. I go to the gym daily. 9. We 
made a bonfire at the beach. 10. They drive to the city. 11. The elevator went to the basement. 12. We 
noticed that there was a policeman at the door. 13. He talked to the press after the meeting. 14. They 
gave the prize to my opponent. 15. Call me at 6:30 p.m. 16. We went to England and Spain last year.
29-2 
1. at 2. at 3. to 4. at 5. at 6. to 7. to 8. at 9. at, at 10. to 11. to 12. to 13. at
14. to 15. to 16. at 17. to 18. at 19. to 20. at 21. to 22. at 23. to 24. to 25. at 26. to
27. at 28. at 29. to 30. at 31. to 32. at 33. at 34. to
30 
The Present Progressive (Continuous) Tense
30-1 
1. The wolf is howling at the moon. 2. Sheila is worrying now because her daughter is late. 3. It is cold. 
We are shivering and we have goose bumps. 4. They are crossing the lake in a canoe. 5. The mayor is 
discussing the enormous potholes on the roads. 6. She is pouring a soft drink for you. 7. The nuns are 
sewing clothes and knitting slippers for the children. 8. The policeman is wearing his bulletproof vest.
9. My great-grandfather is living in a retirement home. 10. They are suing the city. 11. We are looking 
at the Big Dipper and the Little Dipper with our binoculars. 12. Rollande is drinking water because she 
has the hiccups. 13. My stepfather is repairing the bleachers in the stadium. 14. It is snowing 
again. 15. The dog is barking and growling at the groundhog outside.
30-2 
1. is dressing 2. are coughing 3. is tickling 4. am rewinding 5. is waving 6. is rubbing 7. is 
drooling 8. are sitting 9. are living 10. is delivering 11. are writing 12. is whispering 13. are 
breaking 14. is ringing 15. is winning 16. are rattling 17. is teasing 18. are annoying 19. is 
curling 20. are wasting 21. is juggling 22. is overflowing 23. is chewing 24. is putting 25. am 
sending 26. are surrounding 27. am leaving 28. is drawing 29. are melting 30. am giving