音乐会延期了，这太遗憾了，但我们无能为力。

It's ___too ___bad that the concert was postponed, but there's nothing we can do.

如果你丢了票，那太糟糕了，你将无法入场。

If you lose your ticket, ___too ___bad, you won't be allowed entry.

他想要退款，但太遗憾了；政策不允许。

He wanted a refund, but it was ___too ___bad; the policy doesn't allow it.