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Question 22: A. where exposing water in transparent bottles to sunlight for several hours to kill microbes B. in that water in transparent b...
Đề bài
Question 22:
A. where exposing water in transparent bottles to sunlight for several hours to kill microbes
B. in that water in transparent bottles being exposed to sunlight for several hours, killing microbes
C. in which water in transparent bottles is exposed to sunlight for several hours to kill microbes
D. with which water in transparent bottles is exposed to sunlight for several hours, killing microbes
