Fill in the gaps with suitable prepositions, articles and zero article. For zero articles, use 'x' marks.

Covid-19 is (a) ----  infectious diseases which has taken away many lives (b) ---- the world. It has created economic crisis (c) ---- many countries of the world. Many people have lost their jobs. Many small traders compelled to leave their trades. No doubt, it is a great disaster (d) ------ the people of the world. Though the corona virus is very (e)----- deadly, it has created  awareness (f ) -------- mass people. Besides we have learnt many things (g) ----- it so far. Earlier, we were indifferent (h)-------  some rules of health and hygiene. Due to Covid-19, people of the world have become more conscious regarding the rules of health. Now a days, we try to maintain social distancing. We avoid (i)------- massive gatherings of people. We also have made a good  habit (j) --------- washing hands several times a day.