The company has recently taken on fifty new workers some of_______ have just graduated from university.
The news of his death shocked the public, _______ to great concern about students’ safety at school.
– Tom didn’t pass the English test. -- _______. She is better than any of us in English.
He can speak four languages, _______ English, French, Japanese, and Chinese.
Children under six are not _______ to school except those of extraordinary intelligence.
The protection of our environment is not _______ to be left to the government. Everyone should be concerned.