别忘了为这次旅行打包一套换洗衣服。

Don't forget to pack ___a ___change ___of ___clothes for the trip.

我总是在健身包里放一套换洗衣服。

I always keep ___a ___change ___of ___clothes in my gym bag.

雨停后，他很庆幸自己带了一套换洗衣服。

After the rain, he was glad he had brought ___a ___change ___of ___clothes.