Question

– How long have you been collecting stamps?
–         I was ten years old.
A. Since                        B. When                 C. Because

Answer 1

A

解析试题分析：A. Since自从，B. When当，C. Because 因为，句意：你收集邮票有多长时间了？自从我十岁开始。故选A。
考点：考查连词的用法。