Rewrite these sentences using the different expressions above:

1. Mary was worried because Tom was late.

\(\Rightarrow\) Beacause of....................................

2. Tom walked slowly because his leg was bad.

\(\Rightarrow\) Because of .............................

3. Because of the dust in the room, I can't go in.

\(\Rightarrow\) Because ......................................

4. Because of too much smoke, we have to wear masks.

\(\Rightarrow\) Because .......................................

5. I like him because his father is kind to me.

\(\Rightarrow\) Because of .........................................

Combine these sentences using BECAUSE/ AS/ SINCE:
0. I’m going to the post office. I have some postccards to send
-> I’m going to the post office because/ as/ since  I have some postccards to send 
1. Jane was worried. She stayed at home alone.
………………………………………………………………………………………………………
2. Tom couldn’t get the job. He was not confident during the interview.
………………………………………………………………………………………………………
3. I have to work extra hours. I want to help support my family.
………………………………………………………………………………………………………
4. We adorehim. He is very talented.
………………………………………………………………………………………………………………………
5. She has to depend on us. She is an orphan.
………………………………………………………………………………………………………
6. I enjoy reading books. They help broaden my knowldege of the world.
………………………………………………………………………………………………………
7. Don’t believe him. He is always being a liar.
………………………………………………………………………………………………………
8. I haven’t finished my assighnment yet. I don’t have enough materials.
………………………………………………………………………………………………………
9. You must do it right now. It’s very urgent.
………………………………………………………………………………………………………
10. I feel atracted to her. Her voice is very sweet. 
………………………………………………………………………………………………………

III.  Combine each pair of sentences, using “so” or “because”.

1.   She wasn’t hungry. She had a big lunch.

2.  It was a public day. All the shops were shut.

3.  We didn’t enjoy our holiday. The weather was bad.

4.  She is working late next Saturday. She can’t come to tha party.

5.  I bought a computer. I want to play computer games.

6.  We don’t use the car very often. We’ve decided to sell it.

7.  The house was empty. We left the note on the door.

8.  Tony went to Paris. He wanted to see the Eiffel Tower.

PREPOSITONS

* Fill in the blanks with suitable prepositions.

1. Daisy couldn’t go to the cinema because she had to look   her little sister.

2. If we go _________ wasting water, there will be a shortage of fresh water in a few decades.

3. Please turn __________ the TV for me! I want to watch News.

4. What are you doing? – I’m looking __________ my pen.

5. Turn _________ the music. It’s too loud!

6. Don’t forget to turn ___________ the lights when you go to bed.

7. I used to smoke, but I gave __________ last year.

8. Could you fill __________ this form, please?

9. Don’t wory about the baby. I’ll look ___________ her while you’re out.

10. I’m looking __________ to meeting her very much.

CONDITIONAL SENTENCES

1. Hurry up, or we will be late for the bus.

" If we ……………………………………………………………………………………………

2. Study harder, or you won’t pass the final exam.

" If you ……………………………………………………………………………………………

3. Don’t talk in class, or you won’t understand what the teacher is explaining.

" If we ……………………………………………………………………………………………

4. Be careful, or you will break the flower vase.

" If ….……………………………………………………………………………………………

5. Give me the bicycle back, or I will call the police

" I will.……………………………………………………………………………………………

6. I’ll call the police if you don’t give back my bicycle. (Unless = If …. not)

→ Unless …………………………………………………………………………………………

7. Study harder or you will fail in the next exams.

→ If ………………………………………………………………………………………………

8. Hurry up or we’ll be late for the concert.

→ If ………………………………………………………………………………………………

9. We won’t go out unless it stops raining.

→ If ………………………………………………………………………………………………

10. If Joe doesn’t change his way, he will end up in prison.

→ Unless ………………………………………………………………………………………