单项选择题

A) It’s interesting. B) Here it is.
C) I don’t think so. D) Yes, let’s do it.

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填空题

The host required that every lecturer (give) ______ three minutes in their speeches.

填空题

final

A) It’s interesting. B) Here it is. C) I don’t think so. D) Yes, let’s do it. 您的浏览器不支持 audio 元素。