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Exercise 5: Rewrite the sentences, using because/because of

1.    He didn’t come because of his sickness.

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2.    The train was late because the fog was thick.

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3.    The plane couldn’t take off because of the bad weather.

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4.    He left the school because his family was poor.

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5.    We couldn’t study because of the noise.

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6.    I didn’t go swimming because it was cold.

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7.    These students arrive late because of the bad traffic.

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8.    Mary can’t sleep because she has drunk a cup of strong coffee.

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9.    Because of getting up early, he wasn’t late for the first train.

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10.  He was accepted for the job because he had much experience.

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Exercise 6: Rewrite the sentences, using because/because of

1.    Kevin has failed many times, so he disappointed.

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2.    I had not eaten for 24 hours. I was very hungry.

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3.    He ate all the fruits. The fruits were ripe.

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4.    He hadn’t finished the letter. He didn’t go to sleep.

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5.    He is dismissed. He was late for the work very often.

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6.    He drove too fast. He caused a serious accident.

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7.    The streets are narrow, so there are not many people driving cars in this city.

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8.    The test was so difficult that I couldn’t do it.

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9.    I don’t know Russian. I have to have my document translated into Russian.

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10.  The children had an accident. They went to school late.

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Exercise 4: Complete the sentences with because/ because of.

1.                                      I went home early     I was feeling unwell.

2.                                                             We decided not to go out for a meal we were simply too tired.

3.                                           I couldn’t get to sleep    the noise.

4.                                              He only accepted the job     the salary, which was very high.

5.                                                    Sarah can’t climb up the tree her fear of heights.

6.                                                              his age, John was not hired   he had the necessary qualifications.

7.                                             Mary came to class late        her motorbike had a puncture.

8.                                                             Sandy didn’t go to school yesterday           she was sick.

9.                                          She went to bed early    her tiredness.

10.                                         I couldn’t do the test     it was too difficult.

Exercise 3: Complete the sentences with because/ because of.

1.                                        We delayed our trip         the bad weather.

2.                                        Sue’s eyes were red         she had been crying.

3.                                                          My mother is always complaining       the untidiness of my room.

4.                                                                    The water in most river is unsafe to drink     it’s polluted.

5.                                               The trees were bend over    the wind.

6.                                                        You can’t enter this secure areas you don’t have an official permit.

7.                                                           It’s unsafe to travel in that country     the ongoing civil war.

8.                                                                                Several people in the crowd became ill and fainted                                                              the extreme heat.

9.                                                          Mark didn’t go to work yesterday       he didn’t feel well.

10.                                                     We couldn’t get into the disco       the enormous crowd.