On Saturdays, students are very proud to be         on the street to guide passers-by to obey traffic rules.

Festivals are a great time for people to meet friends and enjoy each other’s _____.

The failure has a great         on him, for he is in low spirits these days.

Although her ability in art has not yet developed, she has great____ as an artist.

Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Zone.