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mr x
Questions (1)
use them to complete the sentences.
Note:you must change the form of some of the words. 1.Many_____are exported from Africa to
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Answers (2)
match the quetion number 1,2,3,4,5 with A,B,C,D,E,F,G,H
Carbondioxide is heavier than air. In the well, carbondioxide displaces the air present inside the well and only carbondioxide gas is collected at the bottom. So, there is lack of oxygen. Hence the person feels difficult to breathe while cleaning the deep
