Bài 5:
1. (-) This table isn't made of wood.
(?) Is this table made of wood?
2. (+) This book is sold in many bookstores?
(?) Is this book sold in many bookstores?
3. (-) This gift isn't wrapped in colorful paper.
(?) Is this gift wrapped in colorful paper?
4. (+) Tickets are sold at the entrance.
(-) Tickets aren't sold at the entrance.
5. (+) The car is polished regularly.
(?) Is the car polished regularly?
6. (-) The grass isn't cut every week.
(?) Is the grass cut every week.
7. (-) These tomatoes aren't grown in Mrs Smith's garden.
(?) Are these tomatoes grown in Mrs Smith's garden?
8. (+) The bank is always closed at 4:30.
(-) The bank isn't always closed at 4:30.
Bài 6:
1. Spoken
2. Am not
3. Watered
4. Is
5. Is prepared
6. Buys
7. Admired
8. Are done
9. Is polluted
10. Broken
11. Are planted
12. Is typed
13. Is studied
14. Is made
15. By