It is obvious that chemical pollution will lead to a threat to agriculture and food chain, which will ________threat human health.
Young people should learn how to_____some money for the future.
Nine thousand guests took part in the outdoor ceremony,that impressed so many people at the White House.
Let us hope we can settle the matter without _____ more trouble.
Shortly after suffering from a massive earthquake and to ruins, the city took on a new look.
The specialist at the meeting will give us a lecture next week.