______ there is something else to discuss, I will declare the meeting closed.A、A

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问题 ______ there is something else to discuss, I will declare the meeting closed.

选项 A、As
B、Though
C、Unless
D、While

答案 C

解析如果没有其他的事情要讨论，我就宣布散会。unless=if．．not，意为“除非、如果不”。

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