What a pity! I missed meeting my boss at the airport because my car was______in the traffic jam.
One-third of the country____ covered with trees and the majority of the citizens______ black people.
Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it.
Mencius believed that the reason why man is different from animals is______Man is good.
_____ with so much trouble, we failed to complete the task on time
It’s reported that the United States uses______ energy as the whole of Europe.