--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.
| A．when | B．why | C．what | D．that |
---What’s the matter with John? He has been sitting there for hours.
---A postcard from his father ______ an attack of home-sickness in him.
| A．took up | B．cheered up |
| C．brought in | D．set off |
With the audience ______ at her, the little girl felt nervous on the stage．
| A．staring | B．to stare |
| C．stare | D．stared |
China’s education reforms aim to better develop students’ ability to think ______.
| A．independently | B．obviously |
| C．regularly | D．fluently |
---She looks very happy. She ______ have passed the exam.
---I guess so. It’s not difficult after all.
| A．would | B．should |
| C．must | D．ought to |
---I hear Tony ______ as a lawyer. Why did he quit teaching?
---Who knows? Maybe he just wants to experience a totally different life.
| A．worked | B．is working |
| C．was working | D．will have worked |