摘要： -Look, the light in the teacher's office is still on. Mr Li is working there. He always works late at night. -It be Mr Li. He's gone to London for a short visit. A. can't B. mustn't C. may
网址：http://m.1010jiajiao.com/timu3_id_2375691[举报]
--- Look, the light in the teacher's office is still on. Mr Li is working there. He always works late at night.
--- It ________ be Mr Li. He has gone to London for a short visit.
- A.can't
- B.mustn't
- C.may
- D.must