I don't know the new bikes______already been______(sell) out.被动语态

问题描述:

I don't know the new bikes______already been______(sell) out.被动语态
我比较喜欢看级数高的回答的,因为越是级数高,就越回答的准确,就是您了!

have,sold
主语是复数,助动词用have;sell的过去分词是sold