Nobody but doctors or nurses and those by Dr.Hu to enter the patient’s room.A. invited;

问题补充：

Nobody but doctors or nurses and those by Dr.Hu to enter the patient’s room.

A. invited; is allowed

B. are invited; are allowed

C. being invited; allowed

D. invited; are allowed

答案：

(答案→)A. invited; is allowed

B. are invited; are allowed

C. being invited; allowed

D. invited; are allowed

解析：考查分词做定语和主谓一致。本题第一空的名词those与动词invite构成被动关系，故使用过去分词短语在句中做定语修饰those；第二空与句子主语nobody保持一致，使用单数形式。句意：除医生和护士和那些胡教授邀请来的人，没有人没有进入病人的房间。故A正确。