----What a nice bike! How long have you it ?For a week. I spent all my money on it

问题补充：

----What a nice bike! How long have you it ?

----- For a week. I spent all my money on it.

A. bought

B. had

C. taken

D. kept

答案：

A. bought

(答案→)B. had

C. taken

D. kept

解析：how long 应该与延续性动词连用，只有had 符合题意。