The man is seriously ill ,more than one doctor A.has been sent fo_英语解答

The man is seriously ill ,more than one doctor A.has been sent for b.has been looked for
请说明原因

人气：325 ℃　时间：2020-03-23 00:49:26

解答

has been sent
look for 寻找,在用被动时,只有进行时一种.
being looked for .