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One of _______ most serious environmental problems is _______ pollution.
A. the,zero
B. a,the
C. an,the
D. zero
Select your answer:
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Mixed General Quiz › ViewThere ___ a way to fix this.
a. maybe
b. may be
Grammar › View
__________ are my children. This is Rose and this is Emily.
A. This
B. That
C. These
D. Those