Choose the best options to complete the sentences.

1) ___ which is partly caused by exhaust fumes from cars, is a very big problem in many
big cities across the world.
a) Smoke
b) Smell
c) Smog

2) ___occurs when pollution in the air is absorbed by water droplets in clouds.
a) Acid rain
b) Fossil
c) Pollution

3) Everyone should learn to ___
energy. Using lights/lamps only when needed is a good way
to do this.
a) concern
b) converse
c) conserve

4) Animal species that no longer exist are called ___
a) endangered
b) extinct
c) dead

5) Scientists say that before we ___ oil we will have moved to alternative fuels.
a) run out of
b) use up
c) cut down

6) She buys too many things. She ___ all her money long before her next pay.
a) will be spending
b) will have spent
c) will have been spending

7) At the current rate, temperatures __ by 3 or 4 degrees by 2050.
a) will have increased
b) will increase
c) will be increasing

8)I ___ my homework when my father comes home.
a) will be doing
b) am going to do
c) am doing

9) If you mix water and electricity, you ___ a shock.
a) will get
b) get
c) will be getting

10) I hope I ___ all the irregular verbs before the exam.
a) will learn
b) are going to
c) will have learnt

11) World leaders World leaders ___ in Geneva tomorrow to discuss the issue of over
popullation.
a) meet
b) are meeting
c) will meet

12) Unless we ___ our emmisions to almost zero, the global temperature
to rise.
a) don't reduce, will continue on
b) will reduce, will countinue
c) reduce, will continue​

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