确保你带一套换洗衣服。

Make sure you bring ___a ___change ___of ___clothes.

如果你愿意，可以带一套换洗衣服，这样我们就能弄湿了。

If you want, you can bring ___a ___change ___of ___clothes so we can get wet.

在包里放一套换洗衣服是个好主意。

It's a good idea to have ___a ___change ___of ___clothes in your bag.