Exercise: Rewrite sentences
1. He could't meet you because of being busy
→ Because........................................................................................................
2. She went ot bed early because of her sickness
→ Since..............................................................................................................
3. Nobody can do this test because of its difficulty
→ Since...............................................................................................................
 4. Two cars can't pass each  other  because of the narrow  Beacaus.............................................................................................................
5. We spent the whole day in the garden because  of lovely weather
→ Because........................................................................................................
6. He can't go to school today because of his toothache
→ Because.........................................................................................................
7. I can't play basketball because of my height
→ Because..........................................................................................................
8. She must stay in bed because of her illness
→ Because..........................................................................................................
9. We can't swim in this part of the river bacause of highly polluted water
→ Because..........................................................................................................
10. They couldn't keep on clearing the beach because of heavy rain.
→ Because..........................................................................................................
11. She can't work hard because she is very beautiful 
→ Because of.......................................................................................................
12. He likes  her because she is very  old
→ Because of.....................................................................................................
13.He couldn't go to school because  he was very poor
→ Because of.....................................................................................................
14.  I can't buy this bike because I don't have enough money
→ Because of.....................................................................................................
15. He broke the vase because he was careless
→ Because of.....................................................................................................
17. We can't go for a walk  because it rains heavily
→ Beacuse of.....................................................................................................