A designer has to make new designs of thingsA housewife has to do house work An actor has to play rolesA businessman has to rule businessAn engineer has to invent new machines or improve old onesA teacher has to teach studentsA driver has to drive a carA musician has to play musician instrumentsA cook has to make food for peopleA secretary has to help director or manager A veterinarian has to help animalsA postal worker has to deliver things to people