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1. He couldn't meet you because he was busy.
2. Because of the heavy rain, we can't go for a walk.
3. She couldn't  come to class because she was ill.
4. Because the road is narrow, two cars can't pass each other.
5. He broke the vase because of being careless.
6. Because the test is difficult, nobody can do it.
7. Since the source of water is polluted, many people in this area feel unhealthy.
8. I couldn't do the test because of its difficulty.
9. Because of the red traffic lights, we stopped the car.
10. John succeeded in his exam because of working hard and methodically.
11. I couldn't read the letter because it was dark.

12. Because he has good conduct, all the teachers love him.

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11. Betty was clever fashion designer.
12. He always studies carefully.
13. She sings excellently.
14. She is an excellent student.
15. He was an active participant in the game.
16. That girl was an attractive performer.
17. Geogria plays the piano well.
18. The film has a dramatic ending.
19. He is a quick thinker. 
20. Ann completed the course successfully.

1. He couldn't meet you because he is busy

2. Because of heavy rain, we can't go for a work

3. She couldn't come to the class because she is ill

4. Because the road is narrow, two cars can't pass each other

5. Because the test is difficult, nobody can do it

6. Since the source was pollutedmany people in this area feel unhealthy

8. I couldn't do the test because of it difficulty

9. Because of turning red of the traffic lights, we stopped the car

10. John succeeded in his extra brcause of working hard and methodically

11. I couldn't read the letter because it is dark

12. Because he has a good conduct, all the teachers love him