9. Because they performed well, they won the first prize.

10. Because you advised, we didn't use this poisonous chemical.

B. 1. He came late because of the darkness.

2. I can't study because of the noise.

3. I can't sleep because of the hot weather.

4. He left school because of his hard life.

5. Mary didn't go to school yesterday because of her sickness.

6. She went to the bed early because of her tiredness.

7. I like him because of his father's kindness to me.

8. I can eat these fruits because of their green color.

9. I can't do the test because of its difficulty.

10. The train came late because of the rain.

11. Ann didn't go to the circus with Betty because of her bad cold.

12. John succeeded in his exam because of working hard and methodically.

*Giải thích: Cấu trúc: Because + Clause 1, Clause 2 hoặc Clause 2 because Clause 1.

                               = Clause 2 because of V-ing+.../N-phrase/N (biến đổi Clause 1 thành 1 cụm từ hoặc 1 1 danh động từ - Gerund)

Xin ctlhn!

CHÚC BẠN HỌC TỐT