让我弄清楚——是我付钱吗？

Let me ___get this ___straight - am I paying for this?

下次你应该试着把事实弄清楚。

Next time you should try to ___get your facts ___straight.

在组装家具前，我需要把说明书弄清楚。

I need to ___get the instructions ___straight before assembling the furniture.