W: The experiment has been completed, hasn’t it? M: ______A、Yes. We need another

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问题 W: The experiment has been completed, hasn’t it? M: ______

选项 A、Yes. We need another week to complete it.
B、Yes. It has been completed beautifully.
C、No. It was completed last week.
D、No. I have no idea about it.

答案 B

解析
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