31. Tom is often punished because he is very lazy.
Because of
he is
32.I was late because it rained heavily.
Because of
it rained
33. They turned the heating on because the weather was very cold.
Because of
the weather
34. She has to stay at home because of her sick mother.
Because of
Her mother
35. Because Hoa was rich, she could buy that house.
Because of
Hoa was
36. Because the rain was so heavy, I couldn't go to school.
Because of
the rain was
37. His father asked him to go stay at home because he was sick.
Because of
His father was
38. Because there was an accident, I was late.
Because of
there was
39.She failed the University entrance exam because her grades were bad.
Because of
Her grades
40. Because I studied hard, I passed the exam.
Because of
I studied
41. Because of the cheap price, my wife insists on buying the Tivi.
Because
The price
21