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.