The pollution in Hong Kong is ....... problem.
dangerous
land
serious
safe
rubbish

Fill in the gaps.
The pollution in Hong Kong is ....... problem.
dangerous
land
serious
safe
rubbish
We have ....... pollution which makes the rivers and the sea very dirty.
smoke
water
land
noise
air
Some seafood is no longer ...... to eat now.
roadworks
safe
dangerous
problem
fresh
We have ....... pollution because of the ........ made by cars and factories.
air
land
smoke
rubbish
noise
...... pollution is also getting worse because of the ...... and traffic in our streets.
land
noise
water
roadworks
serious
If we allow this go on, Hong Kong will become a ...... place to live in.
dangerous
safe
fresh
noise
rubbish
Therefore we must do something before it is too .......
safe
late
dangerous
serious
noise
If we don't stop making a lot of smoke, we won't have ..... to breathe.
land
fresh air
water
smoke
fresh food
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