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Ex1/

1. necessary
2. reduction
3. innovations
4. effective
5. electricity
6. conservation
7. consumers
8. collection
9. Environmentally
10. regularly
11. consumers
12. luxury
13. energetic 
14. Solar
15. necessity

Ex2/

1. so
2. because
3. but
4. however
5. and
6. therefore
7. because
8. but
9. or
10. so
11. or
12. but
13. however/so
14. therefore
15. so

VOCABULARY EXERCISES:

Exercise 1: Complete the sentence with the correct form of the word in parentheses.

1. Electricity, gas and water are _neccesary__ in Western countries. (NEED)

2. There has been some _reduction__ in unemployment recently. (REDUCE)

3. There are a lot of technological _innovation______ designed to save energy. (INNOVATE)

4. We find advertising on television very _effective_________. (EFFECT)

5. I switched the light off to save _electricity_______. (ELECTRIC)

6. Energy ___conservation ____ includes searching for alternative fuels. (CONSERVE)

7. Energy-saving bulbs help __consummer _______ save money. (CONSUME)

8. She needed only one more stamp to complete her __collection_____. (COLLECT)

9. __Environmentary________ friendly energy sources include water and wind power. (ENVIRONMENT)

10. People who exercise __regurlary________ are less likely to feel stress. (REGULAR)

11. Most advertising is aimed at attracting as many __consumers________ as possible. (CONSUME)

12. Thirty years ago, it was a __luxury_______ if someone had a television set. (LUXURIOUS)

13. M.U. Football Club has millions of __energetic________ supporters in the world. (ENERGY)

14. __Solar_______ energy is thought of as an alternative power in future. (SUN)

15. Saving energy is an absolute __necessity________. Everybody should do it. (NECESSARY)

GRAMMAR EXERCISES:

EXERCISE 1: Fill in the blank space in each sentence with and, but, so, or, because, therefore, however.

1. Polly’s watch was broken __so__________ she borrowed mine.

2. My family went to Africa ___because_________ we wanted to study the wild animals.

3. Melissa tried to read the book ___but________ she couldn’t understand it.

4. She isn’t English. __However________, she speaks English perfectly.

5. They went to town __and_______ bought a lot of clothes.

6. The road was under water. ___Therefore_______, the police closed it to traffic.

7. The air is polluted __because_______ there’s too much traffic.

8. I haven’t got a car ___but______ I’ve got a motorbike.

9. Study harder ___or_______ you will fail the coming exam.

10. She’s working late next Friday __so________ she can’t come to the party.

11. Would you like some water ___or_________ some fruit juice?

12. I was hungry __but________ didn’t eat on the plane. The food didn’t look appetizing.

13. We wanted to go to the beach; ___however_____, it started to rain ___so____ we stayed at home.

14. Someone switched the freezer off. ___Therefore________, all the food was spoilt.

15. The water in the river is polluted, ___so_________ we can’t go swimming.
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