Question

—Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he .

—Mr. Wang __________ be in the office. The light is still on.—No, he __________ be. Because he phoned me from the farm just now. A．may; mustn’t B．mustn’t; mustn’t C．can’t; can’t D．must; can’t

Answer 1

D

考查情态动词表推测。must表推测用于肯定句当中，can表推测用于疑问或否定句中。所以答案选D。