{{B}}quEstions 19 to 21 ArE BAsED on thE ConvErsAtion you hAvE just hEArD、{{/B}}

A．thAt thErE wAs no EFFECt.
B．thAt it improvED opErAtions.
C．thAt opErAtions BECAmE lEss EFFiCiEnt.
D．thAt thE EmployEEs BECAmE DissAtisFiED、