中国大学MOOC: Winning first place must have been quite a __________.
举一反三
- Winning first place must have been quite a __________. A: thrill B: thirst C: / D: /
- 中国大学MOOC: They have been waiting for many hours to see the singer, but the airplane must have been ____ .
- He fifty when I met him the first time. A: must be B: must have been C: should be D: should have been
- She _______ fifty or so when I first met her at a conference. A: had been B: must be C: has been D: must have been
- ______ a teacher, one must first be a pupil. A: Being B: Having been C: C. To be D: To have been