1 better luck next time
2 better off
3 better than half
4 beyond the reach
5 birth certificate
6 bit by bit
7 bite off more than one can crew
8 black and blue
9 black and white
10 black coffee
11 blood test
12 boil down to
13 book up
1 box office
2 break down
3 break even
4 break new ground
5 break up
6 bright sides
7 brighten one's spirits
8 bring sb. up to date on sth.
9 bring…along
2 better off
3 better than half
4 beyond the reach
5 birth certificate
6 bit by bit
7 bite off more than one can crew
8 black and blue
9 black and white
10 black coffee
11 blood test
12 boil down to
13 book up
1 box office
2 break down
3 break even
4 break new ground
5 break up
6 bright sides
7 brighten one's spirits
8 bring sb. up to date on sth.
9 bring…along