I always take something to read when I go to the doctor’s________I have to wait.[ ]

37. Alan had taken care with his appearance that evening.

The employees were tired of working ________ hours and some of them even gave up their work.[ ]

I think you can ________ moneyby yourself to buy a birthday present for your mother. —OK. I’ll try. I’llnot let a penny waste.

He is a swimmer,and he swims very _____________ .