问题补充:
– How long have you been collecting stamps?
– Ever I was twelve. I have been collecting stamps for about eight years.
A. since B. before C. by
答案:
解析:考察连词。since自从……以来;before在……之前;by到……为止。句意:你收集邮票多久了?——自从我十二岁以来,我一直收集邮票,已经有八年了。since +一般过去时,表示从过去某时开始,故选A