1.

A.

another

B.

plentiful

C.

dangerous

D.

limited

2.

A.

population

B.

education

C.

development

D.

satisfaction

3.

A.

countryside

B.

natural

C.

changeable

D.

dioxide

4.

A.

renewable

B.

artificial

C.

unfortunate

D.

continuous

5.

A.

easily

B.

energy

C.

negative

D.

consumption

6.

A.

musician

B.

scientist

C.

energy

D.

biogas

7.

A.

advantage

B.

atmosphere

C.

motorbike

D.

generate

8.

A.

effective

B.

regular

C.

different

D.

serious

9.

A.

convenient

B.

abundant

C.

expensive

D.

different

10.

A.

excellent

B.

dangerous

C.

plentiful

D.

polluting

11.

A.

exercise

B.

calendar

C.

travelling

D.

convenience

12.

A.

advantage

B.

enormous

C.

petroleum

D.

tendency

13.

A.

excellent

B.

marvelous

C.

familiar

D.

similar

14.

A.

abundant

B.

wonderful

C.

convenient

D.

important

15.

A.

holiday

B.

effective

C.

pollution

D.

attention

1.

A.

new

B.

sew

C.

few

D.

knew

2.

A.

large

B.

hard

C.

carbon

D.

marry

3.

A.

tool

B.

blood

C.

spoon

D.

noon

4.

A.

report

B.

transport

C.

short

D.

power

5.

A.

plays

B.

wants

C.

looks

D.

helps

6.

A.

truck

B.

abundant

C.

nuclear

D.

dump

7.

A.

decided

B.

played

C.

listened

D.

enjoyed

8.

A.

biogas

B.

solar

C.

hydroelectric

D.

environment

9.

A.

pleasure

B.

meat

C.

heat

D.

feed

10.

A.

energy

B.

electric

C.

plentiful

D.

renewable