她已经穿坏了两双鞋子。

She has already ___worn ___out two pairs of shoes.

我的鞋子穿坏了，需要更换。

My shoes are ___worn ___out and need to be replaced.

如果你每天使用这台机器，可能会很快把它用坏。

If you use the machine every day, you might ___wear it ___out quickly.