问题描述：
Is there ____on the blackboard? ----No,there's____on the blackboard.
请选some,any,somebody/someone,everybody/everyone,nobody/no one, something,anything,nothing,many,much,none其中一个
请选some,any,somebody/someone,everybody/everyone,nobody/no one, something,anything,nothing,many,much,none其中一个
问题解答：
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