David is the current holder of the 5,000-meter world record, but there is no ____ that he will win in the Olympic Games.

It is insisted that the One-China        should be the basis for the development of relations between the mainland and Taiwan. 

The stronger the______ for acquiring language skills is, the more quickly a language beginner will learn. 

The managing director of this department took the ______ for the accident, although it was not really his fault.

I prefer to eat in that restaurant, because the ____ of service there has improved a lot.