Answers

2016-02-14T18:20:11+05:30
We can use  compressed fibreboards,rough plaster , and draperies in walls and roofs of hall. moreover we can use thick curtains . pls mark it as best ans
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2016-02-14T18:39:52+05:30
1 use curtains
2 use furnitures made up of sponge
3 keep the window open

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