So much of interest______that most visitors simply run out of time before seeing it all.
—Some people believe that robots will take over the world one day.—What if that is the ________?
There are a lot of problems today which are beyond any single person’s ability to solve,and they call for united _________.
Are these made __________ hand or __________ machine?
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?