A new study finds that sitting can shorten a person’s life almost as much as smoking can, which _______ just how damaging inactivity can be.
—Mum,it is nice weather.I want to skate this afternoon. —Don’t you think the ice on the lake is too thin to __________ your weight?
I was paid last week,but I can’t remember the exact __________ of the money.
—He always appears when we are in trouble. —We can find a true friend _________ him.
Playing tricks on others is __________ we should never do.
In 1998,great floods __________ the southern states of China.