In some parts of the world ,tea ___ with mike and sugar .A.is serving B.is served C.serves D.served 为什么选B,为什么ACD不可以?

问题描述:

In some parts of the world ,tea ___ with mike and sugar .A.is serving B.is served C.serves D.served 为什么选B,为什么ACD不可以?

这里是被动语态啊,必须用be动词+动词的被动语态.所以必须选B