— Could you please tell me     ?

 —Tomorrow morning.



A．how I can get to the post office

B．how long can I keep the book



C．when to leave for Beijing

D．where I should take the early bus

龋第一位好发牙面为（）

A.唇颊面

B.舌腭面

C.近中面

D.远中面

E.咬面