In the following passage, some words have been deleted. Select the most appropriate option
to fill in each blank.
Pollution is destroying nature. The smoke that is (1) ______ from the chimneys of the
factories, and from vehicles is the mixture of poisonous gases. Due to environmental
pollution, there is (2) ______ in nature, so, many birds, animals, and plants are on the verge
of (3) ______ day by day. The only way to (4) ______ environmental pollution is to plant many
trees. By planting trees, we can get rid of many harmful poisonous gases. It is the
responsibility of everyone to (5) ______ and protect our environment.
SubQuestion No : 21
Select the most appropriate option for blank 4.