It is required that students _____mobile phones at school, so seldom _____them using one.

—She joined a football team last fall and was recently made captain.  —Never _____ she'd ever have that much energy.

— Tom is never late for work. Why is he absent today ?— Something _______ to him. 

Did Jack take the doctor’s advice that he ________ in bed for a couple of days?

I would have come to see you earlier, but I __________ too busy.