题目内容
The witnesses said that ______ UFO was travelling from east to west when they saw it at ______ sunset.
A. the; / B. /; the C. an; / D. a; the
A

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题目内容
The witnesses said that ______ UFO was travelling from east to west when they saw it at ______ sunset.
A. the; / B. /; the C. an; / D. a; the
A