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ANCIENT CIVILIZATIONS WERE NOT AWARE THAT THE EART...
ANCIENT CIVILIZATIONS WERE NOT AWARE THAT THE EARTH ___ A SPHERE....
195 CAU TRAC NGHIEM FOR 9 P
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Đáp án tham khảo
160. Ancient civilizations were not aware that the earth ___ a sphere.
A. is B. was C. had been D. has been
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160.
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195 CAU TRAC NGHIEM FOR 9 P