Ann thought shE woulD BE FrightEnED BECAusE ______.
A．shE hAD nEvEr Flown BEForE
B．shE hAD A FEAr oF BEing in high plACEs
C．shE hADn' t mADE propEr prEpArAtions.
D．shE wAs nAturAlly timiD