Fill in the blanks with suitable prepositions or articles. Some of the blanks may not require a preposition or an article. Put a cross  (x) in those blanks:  

There is no doubt that youth is a)_____best time of (b)_____life.This is the time when it is (c)_____most important (d)_____ one to remember (e)_____ maxim. "As you sow, so shall you reap". One must sow (f)_____seeds (g)_____ industry, truthfulness and other virtues (h)_____ this season (i)_____ reap the harvest of prosperity and happiness. Whatever takes root in a man (j)_____this time lasts throughout the rest of his life and moulds his future.

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.