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

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Themanisseriouslyill,morethanonedoctorA.hasbeensentforb.hasbeenlookedfor请说明原因Themanisseriouslyill,mo

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

The man is seriously ill ,more than one doctor A.has been sent for b.has been looked for请说明原因
has been sent
look for 寻找,在用被动时,只有进行时一种.
being looked for .

b
a 表示主语被派出找医生
b 表示有人去找医生了