Farmers make their soil more productive by distributing _______.

Chemical wastes from factories are _______ that cause serious damage to species habitats.

This book is not really ________. It is a waste of money buying it.

Sometimes it is ________ to find suitable books for our children.

A book may be evaluated by a reader or professional writer to create a book ________.

The _______ wanted to reduce the breadth of the games, with many events currently having small fields and weak competition.

Before the 22nd SEA Games, Vietnam had made a good _______ in every aspect.

ASEAN press praised the great _______ of Vietnamese athletes at the 22nd SEA Games.

The success of the 22nd SEA Games had a great contribution of many _______ volunteers.

The International Red Cross helps people in need without any discrimination based on _______, race, religion, class or political opinions.