-- Look at the boy running on the ground. Is it David?-- It _______ be him. I saw him go to the teacher’s office just now.
—Welcome to our school. —____
Linda is fifteen ____. She is in Class1, Grade9.
This is my teacher, Miss Chen. ____ is from Hebei.
—I’m in Class4. Are you in Class4, ____? —Yes, I am.
—Is her name Kate? —____