Fill in the blanks with suitable words:

Our forests are a part of our environment. To (a)________ ecological balance, forests are necessary. But the amount of forests of the country (b)_______ being shrunk day by day. Some people remain (c)________ with their personal benefits. They do not (d)________ of the environment. Trees produce oxygen and (e)_________ the environment cool and prevent the rise of temperature. Whereas, some greedy people, out of their self-interest,(f)_________ the forests by cutting down trees at (g) __________. They should know  and realize that indiscriminate (h)________ down of trees destroys the ecological balance. They should also realize that if this destruction (i)_________one day our country may turn into a desert. We hope that they will ultimately realize the (j)________

We are not ungrateful to the freedom fighters.

Their contribution is the greatest thing. 

An imperative sentence expresses a command, request, advice, or suggestion. It typically starts with a base form of a verb, and the subject 'you' is often understood but not stated. To form a negative imperative, 'Do not' or 'Never' is placed at the beginning of the sentence.

In the given sentence, "You should never disrespect or forget our martyrs," 'should never' indicates a strong suggestion or advice against an action. To transform this into an imperative sentence, we remove the implied subject 'you' and the auxiliary 'should', directly starting with 'Never' to convey the strong negative command or advice.

Our government has built the national memorial with a view to paying tribute to their memories. 

 (e) A freedom fighter is greater than any other son of the soil.

Our independence was got/gotten by us for their sacrifice.