. Getting to other planets or to the moon _____ many problems.
Our football team’s __________ has been excellent during the whole year.
—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.