这位经常出差的乘客是航空公司的白金会员。

The frequent ___flier has platinum status with the airline.

他们在超市门口发放广告传单。

They handed out ___fliers at the supermarket entrance.

买这家新公司的股票是个冒险，但有可能会赚大钱。

Buying shares in this new company is quite a ___flier, but it could pay off big time.