题目内容：

——Where is Mike?
——He ______ to the library.
A.has gone B.has been C.went to D.gose
I don't believe that you can work out the problom,______?
A.can you B.don't you C.can I D.can you
I haven't seen her since my dear aunt _______ here.
A.left B.has left C.is left D.had left
Could you tell me______________?
A.where is the post office
B.how could I go to the post office
C.wher the post office is
D.how i could go to the post office
第二题的D是：D.can't I