Without effort, there can be no (a)___ in life. Life loses Its interest (b)___ there is no struggle. Games become (c)___, If there is no competition in (d)___and if the result can be (e)___foreseen. No matter we win (f)___ game or lose it, the the contest, the greater the interest. A (h)___is not a real triumph unless (i)___ the sides are equally strong. Whether (j)___ like it or not. life is a continuous competitive examination.

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.