Fill in the blanks with the words from the box. You may need to change the forms of some of the words. You may need to use one word more than once:

female	organs	on	prevail	allow
no	cause	bites	breed	a

Dengue fever is (a) ___ tropical virus-infected disease. It is (b) _____  in more than 110 countries. It is (c) _______ by dengue virus. The fever is spread by (d)___ Aedes mosquitoes. When the mosquito (e) ______a man, the virus enters the blood cell, grows-rapidly and attacks many(f)________  of the body. There is (g) ________  specific medicine to treat dengue infection. So, we must put emphasis (h) __________ preventive measures. For this we must keep our surroundings clean to stop (i)_____ of Aedes mosquitoes. Again we must not (j)_______to accumulate water in any open space for more than two days.

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.