Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.

One advantage of living on the top floor of a high rise is that you can get a good______of the city. 

A(n)______ is a person who understand people’s characters.

Though having lived abroad for years, many Chinese still       the traditional customs.

 The ___of North Korea and South Korea is getting worse and worse these days.