why wErE thEy worrying All thE EvEning
A．BECAusE thEy wErE AFrAiD thAt somEonE might stEAl thEir pAintings.
B．BECAusE thEy DiDn't know who to thAnk For thE tiCkEts.
C．BECAusE thE strEEts wErE wEt AnD it wAs DAngErous to DrivE.