The workers demanded that their employer_____ their working conditions.

29It is required in a recent study suggesting the importance ofteenagers’ communication with other children of the same age

In recent years, laws have been passed to stop wild animals from _______.

She owns a lot of books, most of _____ arewritten in English.

h the help of our class, Little Mikemade such great progress in Chinese that he can write a 200-character ____