I cant open this lock,there must be ____key that will open it.填哪个词?some/any/every/each/either说明理由

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I cant open this lock,there must be ____key that will open it.填哪个词?some/any/every/each/either说明理由

I cant open this lock,there must be ____key that will open it.填哪个词?some/any/every/each/either说明理由
I cant open this lock,there must be ____key that will open it.
填哪个词?
some/any/every/each/either
说明理由

I cant open this lock,there must be ____key that will open it.填哪个词?some/any/every/each/either说明理由
some
some + 名词单数,表示这类物品中的某一个,但具体哪一个不知道

some 它们之间的区别你可以去查语法书籍 那里讲的更详细 更有助于你了解它们的不同用法

some
表示不确定的因素