请补充完整金属活动性顺序表：K Ca Na _________ Al  Zn Fe Sn Pb（H）Cu_________Ag Pt Au．某校的当堂作业是：用两种不同的方法，设计实验来验证铁的金属活动性比铜强．写出实验步骤及实验现象，请你帮助完成该题．

— We spent three hours waiting in the rain _____ your coming late again.  

— I am sorry.     [ ]

A. rather than

B. instead of

C. because of

D. less than