Our teacher told us that moon moves around earth and earth circles sun.A. a a a aB.

问题补充：

Our teacher told us that moon moves around earth, and

earth circles sun.

A. a, a, a, a

B. an, an, an, an

C. the, the, the, the

D. /, /, /, /

答案：

A. a, a, a, a

B. an, an, an, an

(答案→)C. the, the, the, the

D. /, /, /, /

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