问题
选择题
________ UFO landed on Center Park and ________ alien got out of ________ UFO.[ ]
A. An, an, the
B. A, an, the
C. A, a, a
D. A, an, a
答案
答案：B
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________ UFO landed on Center Park and ________ alien got out of ________ UFO.[ ]
A. An, an, the
B. A, an, the
C. A, a, a
D. A, an, a
答案：B