视频和书现在正在销售。

The video and book are now ___on ___sale.

门票昨天开始销售。

Tickets went ___on ___sale yesterday.

昨天我和朋友去逛街，看到这条漂亮的裙子在打折。

I went window shopping with my friends yesterday and I saw this beautiful skirt ___on ___sale.