Dogs have been man's good firend for t_____ of years.

Dogs have been man's good firend for t_____ of years. Dogs have been man's good friends for t______ of years.Many Dogs have been man`s friends for t＿ of years.Many stories to 根据短文意思写单词Dogs have been man"s best friend for t__ of years , 翻译句子,1.Dogs have been man*s best friends for thousands of ye we have been good friend for many years goodfriends 和for man 组句 have ,millions ,dogs ,people ,for ,kept ,of ,years . People have had pet dogs for thousands of years. 翻译 _______ have been good friends for more than ten years. We have been good friends for five years对for five years 划线提问 people have kept dogs for millions of years 为什么用have kept For hundreds Of years,scientists have been trying to answer