--Listen! Someone is knocking at the door.
-- ______ be Mary. She has just been to Beijing
A.She mustn’t | B.It can’t | C.It must | D.She may |
推荐套卷
--Listen! Someone is knocking at the door.
-- ______ be Mary. She has just been to Beijing
A.She mustn’t | B.It can’t | C.It must | D.She may |