15.For many years,people electric cars.However,making them has been more difficult than predicted.A．had dreamed of B．have dreamed of C．dreamed of D．dream of我选了c,我看到后面有现在完成时,就觉得前面应该是过去的,

They have ( )(成为) friends for many years His grandparents ______(die) for many years. I ___(learn) English for many years Every few years和for many years是什么意识 we have been good friend for many years goodfriends 和for many years 句子成分 They got married for many years .= Many years ___ ___ since they got married. many.Years. 英语翻译 people have been visiting it for many years. She worked(as)a teacher for many years.怎么翻译? Am still in China for many years中文 ben has lived in this f___ for many years He;s worked in this factory for many years 完形填空for many years,luis and his mom For many years they were all Americans.翻译 My grandfather has ____ (开车) for many years. 时态填空_____you _____(be )in TianJin for many years. for many years to come这个怎么用啊 英语翻译：playing this game here for so many years