Mr. Green and Mr. King have taught English at Beijing Sunshine Secondary School ________ they came to China two years ago.
Christmas is coming. Tom will ______ New York for the family get-together.
—He may be in the classroom, I think. —No, he _______ be in the classroom. I saw him go home a minute ago.
—Have you cooked supper_______? —Yes, I have _______ finished it.
It’s more than 8 years since I _______ a teacher.
—Did you see ________ ball pen just now? —Is it _______ black one? I saw it somewhere.