Ex1:

1. Because of raining, we stopped the match.

2. Because of Tom's illness, hw is absent today.

3. Because of her kindness, everyone loves her.

4. Because of being tired, I will have a long trip.

5. Because of being passed the exam, his parent very proud of him.

6. Because of dirty house, I cant feel comfortable.

7. Becuse of being beautiful, her husband very loves her.

8. Because of being hot, i will travel to the beach this weekend.

9. Because of being difficult, i cant undertand.

10. Because of 10 mark in Math exam, i am so happy today.

Ex2:

1. B though

2. D although

3. A despite being tired

4. B even though

5. B even though

6. D because

7. D though 

8. D A and B

Ex3: 

1. Whichsoup do you like? I like the chicken soup.

2. Where does Ann usually go in the evening? She usually goes to the cinema.

3. Who will Carol and Bill visit on Sunday? They will visit thei grandparents.

Ex5: 

1. Although

2. so 

3. but

4. so 

5. because

6. so

7. but 

8. so

9. because

10. Although

11. but 

12. so 

13. Although

14. so

 15. but 

16. because

17. because

18. because

19. becuase

20. Although