G12 - ÔN TẬP
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Question 4. The sudden disappearance of ____ large number of wild animals is a complex problem that our Earth is facing. A. a B. the C. Ø D. an
A. a
Question 3. Everyone has done a lot to raise people’s awareness ____ preserving the wild animals. A. of B. for C. after D. to
A. of
Question 2. There are ____ lots of reasons why some species become extinct or endangered. A. an B. a C. Ø D. the
B. a
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