— _____ are stamps used ______? — Sending letters.
A. Why; for B. What; for C. What; / D. How; for
Christmas is coming. Tom will ______ New York for the family get-together.
A. return back to B. return to C. return D. go back
—He may be in the classroom, I think.
—No, he _______ be in the classroom. I saw him go home a minute ago.
A. may not B. can’t C. mustn’t D. needn’t
—Have you cooked supper_______? —Yes, I have _______ finished it.
A. yet; just B. yet; ever
C. already; yet D. already; just
It’s more than 8 years since I _______ a teacher.
A. become B. has become C. became D. becomes
—Did you see ________ ball pen just now?
—Is it _______ black one? I saw it somewhere.
A. a; a B. a; the C. the; the D. the; a
