－We could have asked Mr. Zhang for help. He is always ready to help others.

－I ________ that. A long time _______.

A．have forgot, wastes

B．forgot, wasted

C．forgot, was wasted

D．forgot, has been wasted

制定促销组合可以考虑的特殊因素包括（）。

A.语言障碍

B.文化差异

C.媒体可用性

D.政府限制