--Could I use your bike Jack?--Of course you.A. canB. mayC. couldD. might

问题补充：

--Could I use your bike, Jack?

--Of course, you.

A. can

B. may

C. could

D. might

答案：

(答案→)A. can

B. may

C. could

D. might

解析：本题是情态动词的考查。could在问句中指的是语气上的委婉，并不是过去时，回答时还得用can。