分类：教育/科学-学习帮助
问题：英语选择题from高一20单元(13)
----How long have you been friends?----Well,our friendship_______childhood?A.dates f  dated from ntinued in arts from我选B参考书选A 
回答：直接用主动，不用被动，而且date from起始于,溯源到 
date back to]从...时就有, 回溯到, 远在...(年代)