Bangladesh is beset (a)___ many problems. Illiteracy is one of them. It is not a (b)___ to us. It is undoubtedly (c)___curse. It (d)___all kinds of developments of a country. It also causes many other problems (e)___our society. As most of our people are not conscious (1) the importance of education, we cannot take proper step to (g)___ Illiteracy. As a result, we are (h)___behind. We have to depend on the foreign aids. All of us should come forward (i)___ to remove illiteracy from the society. Then the (j)___ of the country will be possible.

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.