You'll find it hard to get rid of the drug habit you have it.
| A．before | B．once | C．until | D．though |
, the sun was rising in the east.
| A．Arriving there | B．We arriving there | C．Having arrived there | D．We arrived |
Across North China in the world, namely the Great Wall.
| A．the longest wall runs | B．runs the longest wall |
| C．does run the longest | D．does the longest wall run |
—Pity you missed the lecture on nuclear pollution.
—I _______ it ,but I was busy preparing for a job interview.
| A．attended | B．had attended | C．would attend | D．would have attended |
The principal walked onto the platform and seated himself in a chair, _______ for answering questions.
| A．prepared | B．being prepared | C．prepared | D．preparing |
That truck nearly hit me; I _______.
| A．might be killed | B．may been killed | C．may be killed | D．might have been killed |