把包放在这里吧，我帮你拿着。

Put your bag ___here and I'll hold it for you.

我们现在必须做出决定，不能再拖延了。

We have to make a decision ___here, no more delays.

这里的问题是没人知道如何使用这台机器。

The issue ___is is that no one knows how to operate this machine.