thE olD womAn wAs vEry surprisED BECAusE shE thought ______.
A．jACk wAs so quiCk to FinD thE oFFiCE
B．jACk hAD lookED For thE oFFiCE For sEvErAl DAys
C．thErE wAs somEthing wrong with jACk's voiCE