Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The _____ of these toxic substances into the environment is potentially devastating.
A.research
B.release
C.delivery
D.distribution

Choose the answer among A, B, C, D to complete each of the sentences below:
There is__to be a serious energy crisis in the next century.
A.known
B.bound
C.reputed
D.foreseen

Choose the answer among A, B, C, D to complete each of the sentences below:
The rapid growth of population led to an acute _______ of housing.
A.shortcut
B.shortage
C.shortcoming
D.shortfall

Choose the answer among A, B, C, D to complete each of the sentences below:
You can drive my car _______ you drive carefully.
A.as long as
B.because
C.unless
D.although

Choose the answer among A, B, C, D to complete each of the sentences below:
This fruit has been in the fridge for over three weeks! It is all___
A.sour
B.bitter
C.mouldy
D.rotten

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
A nuclear reactor releases ______ which is dangerous to the environment.
A.heat
B.radiation
C.carbon dioxide
D.energy

Choose the answer among A, B, C, D to complete each of the sentences below:
We usually do go by train, even though the car___is a lot quicker.
A.travel
B.trip
C.voyage
D.journey

Choose the answer among A, B, C, D to complete each of the sentences below:
I am not used to the cold weather here, so I need to have a heating system ______.
A.repaired
B.installed
C.serviced
D.developed

Choose the answer among A, B, C, D to complete each of the sentences below:
In some countries environmental organizations have been...... to inform people and gain their support.
A.set up
B.taken up
C.made up
D.brought up

Choose the answer among A, B, C, D to complete each of the sentences below:
When ________ a European, we should stick to the last name unless he suggests that we use his first name.
A.(3) talking
B.(4) addressing
C.(2) discussing
D.(1) speaking