Tom has been collecting stamps since
问题描述:
Tom has been collecting stamps since
接:he ten years old(be)用括号的动词填空
答
was,since 引导的时间状语从句用一般过去时.
Tom has been collecting stamps since
接:he ten years old(be)用括号的动词填空
was,since 引导的时间状语从句用一般过去时.