—There is somebody at the door. Who ___________ it be? Is it the postman?
—No. It can’t be him. It’s just seven o’clock. It’s too early.
A.must | B.may | C.will | D.need |
—There is somebody at the door. Who ___________ it be? Is it the postman?
—No. It can’t be him. It’s just seven o’clock. It’s too early.
A.must | B.may | C.will | D.need |