Fill in the blanks with suitable words. Use only one word for each gap.

Modern civilization is the (a) ______ of science. Science has worked (b) ______ a magician in the world. We can't do even a (c) ____ day without the help of science. Many quick means (d) ______ communication like telephone, telex, fax, telegram, satellite etc. are (e) _______ greatest wonders of science. Nowadays, a message can be sent from one corner of the world to another in the twinkle of (f) _______ eye. Science has brought a revolutionary (g) ________ in all fields. In the field of medical science, (h) _____ has got eyes, lame has got legs, deaf has got hearing power, (i) ________ diseases which were incurable in the past are now easily (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.