With my present low income, buying a new car doesn’t seem to be a practical ______ to make.

—Some people believe that robots will take over the world one day.—What if that is the ________?

When I worked as the general manager of the firm, I sometimes had _____ to visit London on business.

The heroic story that the university student had saved a peasant’s life hit the ________ in China Youth Daily.

As we all know，life is a long________full of happiness as well as hardships.