PART A
Choose the corecct option:
1. I came back . . . . . . . . . . I`d forgotten my briefcase.
  a) because b) because of c) so that d) to
2. I cannot come . . . . . . . . . . the weather
a) because b) because of c) so that d) to
3. I wanted to go to the Show . . . . . . . . . . see what was new.
a) because b) because of c) so that d) to
4. I`m going there . . . . . . . . . . find out.
a) because b) because of c) so that d) to
5. Let`s visit them . . . . . . . . . . see what they are doing.
a) because b) because of c) so that d) to
6. I`m asking you . . . . . . . . . . I want your opinion.
a) because b) because of c) so that d) to
7. The flight was cancelled . . . . . . . . . . the snow.
a) because b) because of c) so that d) to
8. I`m afraid I can`t come . . . . . . . . . . I`m already tied up on that date.
a) because b) because of c) so that d) to
9. I went there . . . . . . . . . . I could see for myself what the problem was.
a) because b) because of c) so that d) to
10. I know that . . . . . . . . . . he told me.
a) because b) because of c) so that d) to
11. He arranged the meeting . . . . . . . . . . we could discuss the problems.
a) because b) because of c) so that d) to
12. I phoned you . . . . . . . . . . tell you the good news.
  a) because b) because of c) so that d) to
Supply either because or because of as appropriate
We postponed our holiday. . . . . . . . . . because of the bad weather.
We can`t go to the cinema. . . . . . . . . . because it isn`t open today.
He had to give up work . . . . . . . . . . because of his daughter`s illness.
We have to leave this accommodation . . . . . . . . . . because it costs too much.
. . . . . . . . . . Because of the high cost, we have to leave this accommodation.
We stopped playing tennis . . . . . . . the rain. {because of}
It was all . . . . . . . . her that we got into trouble. {because of}
We had to hurry indoors . . . . . . it was raining. {because}
I am late . . . . . . . the traffic. {because of}
We didn`t arrive until seven o`clock . . . . . . . . the traffic was terrible. {because}
She found the exam easy . . . . . . . . she had worked hard during the course. {because}
He can`t drive . . . . . . . . his illness because of
The restaurant closed down . . . . . . . . the recession. {because of}
He found working in Japan very difficult . . . . . . . . . the language problem. {because of}
He`s very difficult to understand . . . . . . . . . his accent. {because of}
They moved to Liverpool . . . . . . . . . her job. {because of}
There have been a lot of problems in Britain . . . . . . . . mad cow disease. {because of}
They came to London . . . . . . . . he got a job there. {because}
He crashed his car . . . . . . . . he was driving too fast. {because}
He lost his driving licence . . . . . . . . . he was convicted of drinking and driving. {because}
She could only eat a salad in the restaurant . . . . . . she is a vegetarian. {because}
The newspaper was prosecuted . . . . . . . . an article about the Government. {because of}
It