—Is Mr. Green in the office?
—No, he ________ be in the office. Look, the light in the office is off.
A.mustn’t | B.can’t | C.needn’t | D.may not |
—Is Mr. Green in the office?
—No, he ________ be in the office. Look, the light in the office is off.
A.mustn’t | B.can’t | C.needn’t | D.may not |