they are some difficult math problems.改为单数句 ---- ---- diffic

学习 时间:2026-10-08 13:26:22 阅读:5443
they are some difficult math problems.改为单数句 ____ ____ difficult math problems.

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糟糕的纸鹤

发嗲的鸡

2026-10-08 13:26:22

There's a difficult math problem。

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