About __________ of my classmates in my class were born in 2000.A. two third B. four fifth C. three fourths
It’s a good idea _____ a pen friend to practise English.
How many ______ medicine are used for the children of six years old?
Eating fruit and vegetables can help you ______ more vitamins.
Here ______ in the classroom.
We should keep our classroom ______.