be at the heart ofbe at the helmbe at the highbe at the mercy ofbe at the top of one's gamebe at the very center of one's prayersbe at variance withbe at your wits endbe at your wits`endbe at your wits’ endbe attached tobe attended withbe attributedbe availablebe awarebe aware ofbe awaybe away on businessbe awed by sthbe backbe back bybe back in actionbe back in the harnessbe back laterbe back on trackbe back soonbe back with someonebe backedbe barking up the wrong treebe based somewherebe bathed inbe bathed in lightbe batteredbe batting a thousandbe become attunedbe become mired in sthbe behindbe behind onbe behind sbbe behind some thingbe behind somethingbe behind sthbe believed to bebe below the averagebe below the mark for sthbe bent doublebe beside the pointbe beside yourselfbe best hopebe best pleased
