She has an advantage over you .It is ___ (sure/certain) that she will beat you at the match.

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She has an advantage over you .It is ___ (sure/certain) that she will beat you at the match.
She has an advantage over you .It is ___ (sure/certain) that she will beat you at the match.

She has an advantage over you .It is ___ (sure/certain) that she will beat you at the match.
certain
这里是固定的结构:it is certain.
不可以用sure代替.

certain
用sure时,前面的主语为人。

certain