来自马爱清的问题
BenjaminO.DavisJr.was______anassistantsecretaryoftheDepartmentofTransportationin1971
BenjaminO.DavisJr.was______anassistantsecretaryoftheDepartmentofTransportationin1971


BenjaminO.DavisJr.was______anassistantsecretaryoftheDepartmentofTransportationin1971
BenjaminO.DavisJr.was______anassistantsecretaryoftheDepartmentofTransportationin1971
BenjaminO.DavisJr.was_anassistantsecretaryoftheA.Prospect前景,可能性,指望D.admitted准许入学C.attachB.helpA.