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                    - There’re students in Grade7.
 - How many students are there in your class? — Forty,and ________ of us are girls.
 - _______ of the students will take part in the sports meeting.
 - It is said that the gravity on Mars is only about __________ of the gravity on earth.
 - _______ of the students will take part in the sports meeting.
 - The teacher said that__ of the boys would take part in the talent show.
 - Do you often play computer games? —No, And so do ________ of my classmates, you know we are very busy
 - There are floors in my house and my bedroom is on the______floor.
 - What does “three quarters” mean, Li Ping? —I see. It means __________.
 - Do you know nearly ________of our body is water?