I need one more stamp before my collection .A. has completedB. completesC. has been comple

问题补充：

I need one more stamp before my collection .

A. has completed

B. completes

C. has been completed

D. is completed

答案：

A. has completed

B. completes

C. has been completed

(答案→)D. is completed

解析：句意为：我需要多一张邮票，我的收藏就完整了。