Mr Black be at home because she called me from England just now.
My son wants a pet dog for long, but I have no time to buy _____for him.
Mrs Zhang has taught ______math for three years and she teaches very well.
The rest of students in the classroom ______my classmates.
Who is _______ boy playing basketball on the playground. He is Tom. He joined ______ unusual basketball match last year.
There are plenty of _______ in our school. They work very hard.