我喜欢那条裙子，但我要等它打折了再买。

I love that dress but I'm waiting until it's ___on ___sale before I buy it.

这些T恤在打折，所以我买了一件。

The t-shirts were ___on ___sale, so I bought one.

假日季节期间许多商品都在打折。

Many items are ___on ___sale during the holiday season.