单项选择题
People at the party worried about him, because no one was aware（）he had gone.
A.of where B.of the place where C.where D.the place
单项选择题 A sudden noise of a fire-engine made him（）to the door.
单项选择题 （）his examination of the patient, the doctor wrote out a prescription.
单项选择题 Each person at the reunion was required to talk to other relatives to find out if they would buy one of the histories（）it were printed.
