—Do you know who knocked at our door last night, the postman?
—It _______ him. It was only 5 o’clock.
A.mustn’t | B.can’t have been |
C.can’t | D.mustn’t have been |
推荐套卷
—Do you know who knocked at our door last night, the postman?
—It _______ him. It was only 5 o’clock.
A.mustn’t | B.can’t have been |
C.can’t | D.mustn’t have been |