What a(n) _______ it is that the new couple were born in the same year and on the same day.

In Shanghai, people______ thousand tons of watermelon every summer.

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

       He told me that she had met one of my old friends in the street ________.

The new teacher made a good ____ on the students by her rich knowledge and humorous talk.