They go to the movies ________a month.

It’s        educational book. I want to read it      second time.

— I think ______ of the materials I listened to at the beginning of the exam ______ easy.
— I think so.

________ people went to the concert last week .

There are　　　  students in our school.

About ___of the workers in the factory were born_____.

Having ________ exercise every day will do great good to your health.      

_____ of the teachers are women in our school.
A.Two third               B.Two threes              C.Two thirds   

—How many students are there in your school?
—_______ students, I think.