A series of pre-recorded tapes ___ (have,has)been prepared f

雅思辅导资料上说的this model has been prepared as an example of a ver A series of facts （ ）in her diary.A.has been set domn B.was china has a recorded history of 5000 years. recorded 是形容词,按字 帮帮忙China has made a series of plans to ___ the times. 1、China has made a series of plans to ___ the times. China has made a series of plans to ___ the times. pre-prepared For the new series of programs there will be a different pre [D29] She is very dear to us.We have been prepared to do ___ 英语翻译China has undertaken a series of comprehensive economic After a series of unsuccessful attempts,he has finally passe 是has还是have?A lot of advice has/ have been offered by people?