-bebusy;bustleabout;get[have]one'shandfull;beonthego;onone'stoes;havemuchtodo;beoccupied(with);beengagedin(doing)sth.;beontherun;beuptotheearsinwork;beatit;uptothe[one's]eyesin(work);beswamped:
bebusyalldaylong;一天到晚忙碌不停
Shehadbeenonthegoallday.她终日忙碌。