—Are you sure ______ you’ve met him before?

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问题 —Are you sure ______ you’ve met him before?

选项 A、unless
B、that
C、when
D、though

答案B

解析故本题答案为B。

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本试题收录于：公共英语二级笔试题库公共英语（PETS）分类

公共英语二级笔试

公共英语（PETS）

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—Are you sure ______ you’ve met him before?

公共英语二级笔试

公共英语（PETS）

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