{{B}}quEstions 16 to 20 ArE BAsED on thE Following tAlk.{{/B}}

A、thEy CAn EAsily Fit into thE routinEs oF lArgE CompAniEs.
B、thEy CAn ArrAngE thEir timE morE FlExiBly.
C、thEy hAvE BEttEr pAymEnt iF thEy ArE suBContrACtED、
D、thEy mAy work in morE humAnE orgAnizAtions.