问题
选择题
The Great Pyramid is said to ________by aliens. Is there a chance that this might be true?
[ ]
A. be built
B. have been built
C. being built
D. built
答案
答案：B
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The Great Pyramid is said to ________by aliens. Is there a chance that this might be true?
[ ]
A. be built
B. have been built
C. being built
D. built
答案：B