flyer|flyers

我在超市门口收到了一张音乐会的宣传单。

I got a ___flyer for the concert at the supermarket entrance.

篮球队的飞行赛程很紧张，这个月要去五个城市打比赛。

The basketball ___flyers have a tight schedule, playing games in five cities this month.

投资那家新公司是个冒险，但最终获得了回报。

Putting money into that new company was a ___flyer, but it turned out well.