我买了一本地铁票册，用于每日通勤。

I purchased ___a ___book ___of metro tickets for my daily commute.

为了方便，她总是直接买一套十张的渡轮船票。

For convenience, she always buys ___a ___book ___of ten ferry tickets at once.

他在书桌抽屉里放着一本一等邮邮票。

He keeps ___a ___book ___of first-class stamps in his desk drawer.