Ex 2:

1, She phoned the police because she saw the wanted man in a small shop.

2, Because the teacher is sick, we’ll have no class tomorrow.

3, She walked slowly because of her injured leg.

4, Mary looks happy because she has just got good marks.

5, Because he came to the office 10 minutes late, he missed the first bus.

6, I couldn’t read the letter because of the darkness.

7, I didn’t come in time because of a traffic jam.

8, He stayed at home yesterday because of his mother’s sickness.

9, We didn’t go out because of the heavy rain.

10, They will leave early because the distance is very long.

11, She left school because her life was hard at that time.

12, The students couldn’t do the test well because it was difficult.

13, He lives in an earthen house because he is very poor.

14, She can’t buy this book because it is expensive.

15, We can’t study because of the noise.

16, Because this dish is very delicious, we eat much.

17, Because the traffic lights turned red, we stopped our car.

18, My mother went to bed early because of her tiredness.

19, I can’t sleep because the hot weather.

20, Everyone likes him because of his kindness.