In order to catch up with others, I often stay up late to work. —You’d better not, or you will ______ sooner or later.[ ]

This is Jane speaking—-Oh, it’s you.Your voice sounds quite different ___ the phone

Was it by cutting down staff _____ she saved the firm?— No, it was by improving work efficiency.

Be quiet!The students____ a rest in the classroom now.

The employee must have been dismissed by the employer last month, ____ he?