InWesternAustralia,therearearound450aircraftmaintenanceengineers,mostof______workinthePerthmetropolitanarea.
A.them B.whom C.which D.they正确答案B
InWesternAustralia,therearearound450aircraftmaintenanceengineers,mostof______workinthePerthmetropolitanarea.
A.them B.whom C.which D.they正确答案B