a situation that has returned to its usual state again after an unpleasant or surprising event.

It was business as usual at the school yesterday only a month after the fire.

• bat around something
• bat for the other side
• batten down the hatches
• battle lines are drawn
• battle of nerves
• battle of the sexes
• battle of wills
• battle of wits
• be a athlete in the making
• be a [athlete/star/writer etc.] in the making
• be a barrel of laughs
• be a bed of nails
• be a bit much
• be a blessing in disguise
• be above board
• be a bundle of laughs
• be a bundle of nerves
• be a chapter of accidents
• be a closed book
• be a [crisis/disaster etc.] in the making
• be a crisis in the making
• be a crock of shit
• be a cut above
• be a cut above someone
• be a cut above something