three
                    - There are three______ workers in this factory. My brother is in it ,too.
 - Could you help me, Andy? We need ______ tables for the birthday party.
 - of our classmates are good at basketball.
 - _______of the newspaper in the world are written in English.
 - The teacher said that ______ of the boys would take part in the talent show.
 - _________ the people lost their lives in the traffic accident.
 - In our school ________ students can search the Internet for useful information now.
 - About _____________ of the students this year were born in the 1990s.
 - Only ________ of the students come to school by bus.
 - It is said that _____ of the students like to help their parents with the housework