这家咖啡店在做买一送一的活动，所以点一杯可以免费再得一杯。

The coffee shop is running ___twofers this week, so you get a free drink with every purchase.

他既是球队的主教练又是体能教练，真是个双料人才。

He serves as both the head coach and fitness trainer for the team, making him a perfect ___two-for-one.