He's___as a "bellyacher" --he's always complaining about something.A.who is knownB.whom is knownC.what is knownD.which is known为什么不可以选A

He's___as a "bellyacher" --he's always complaining about something.A.who is knownB.whom is knownC.what is knownD.which is known为什么不可以选A
He's___as a "bellyacher" --he's always complaining about something.
A.who is known
B.whom is known
C.what is known
D.which is known
为什么不可以选A

He's___as a "bellyacher" --he's always complaining about something.A.who is knownB.whom is knownC.what is knownD.which is known为什么不可以选A
C.what is known
这个就是这么说的,他就是所谓的“无辜抱怨”的人

acting