【题目】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.
在线课程【答案】A
【解析】
试题分析：考查被动语态。句意：只有那些医生护士和被胡医生邀请的人才被允许进入病人的房间。Invited做后置定语修饰those，are allowed是整句话的谓语，与主语之间是被动关系，故选A项。