[Ans.]

1. people living in big cities

2. Parks only taking up a small amount of space

3. trees offering cool shade

4. people enjoying taking a walk and breathing some fresh air

5. pet dogs needing to exercise every day

[Ans.]

1. because of

2. because

3. because

4. because of

5. because of

[Ans.]

1. because of some problems

2. because he thought his baby daughter needed a mother

3. because of Snow White’s beauty

4. because she looked young and innocent

5. because she knew that the new queen hated her

[Ans.]

1. elevator 2. describe     3. pollution 4. Meanwhile   5. energy

6. benefits 7. Moreover   8. term          9. gradually      10. electric

[Ans.]

1. C 2. B 3. A   4. D 5. C

6. A 7. D 8. B 9. B   10. D

[Ans.]

1. acts on

2. make sure

3. stands for

4. For instance…plastic

5. containing chemical