There are nine______ students at Green High School. Five _____ of them walk to school.
-What’s his brother?-He is a teacher. He__________ maths at a school.
-Help yourself to some more meat.-_______________.
-Do you need my help, Mary?-_____________.
-Hello, Jack. How are you doing?-__________.
-When was David born?-He was born ________ June 12, 1989.