他每天往返于工作和家庭之间。

He spends his days ___shuttling between work and home.

这家公司每天用摆渡车在机场和市中心之间接送员工。

The company is ___shuttling employees between the airport and downtown daily.

老师在课桌间走动分发试卷。

The teacher was ___moving between the desks to hand out the test papers.