I. 1.a 2. d 3. b 4. c 5. b

II. 1. c 2. b 3. a 4. c 5. c 6. d 7. b 8. a 9. d 10. b

III. 1. are ---> is 2. easy ---> easily 3. has ---> had 4. which ---> who 5. despite ---> although

IV. 1. haven't seen 2. tell 3. received 4. will be built 5. am learning

V. 1. out 2. world 3. able 4. channels 5. same

VI 1. b 2. a 3. a 4. b 5. d

VIII 1. Because of his sickness, he didn't go to work

2. Even though my grandmother is old, she cycles 10 kilometers every morning

3. I want to see the painting which you bought yesterday

4. Dinner will be prepared in the kitchen by my sister tonight

5. We have not cleaned our room for a week

6. The children wish they could play with new toys

7. If you speak slowly, he can understand what you mean

8. We could go to the beach if I were free

9. Lan asked me if my brother lived in that city

10. Jane's sister doesn't cook as well as her