.................is the process of making something dirty or impure.
A.Transformation
B.preparation
C.Pollution
D.Population

A lot of trees in .................are cut down, resulting in deforestation.
A.region
B.forests
C.wasteland
D.country

We have to ..............our environment to keep it from harm before it's too late.
A.protect
B.detect
C.respect
D.suspect

In some countries there are laws ................ littering and smoke.
A.forgetting
B.prohibiting
C.observing
D.destroying

Using electricity to catch fish is very dangerous. People may die from ...............shock.
A.electric
B.electronic
C.electricity
D.electrify

He looked ............... at the angry crowd.
A.calm
B.calmly
C.calmness
D.calmity

If it ......................to shine like this, the clothes will be dry in an hour.
A.continue
B.continued
C.continues
D.had continue

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A.hear
B.dear
C.pear
D.clear

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.


A.tuition
B.educate
C.physical
D.summary

All the people on the plane are alive and ..............
A.well
B.flood
C.happily
D.safely