Carl hopes to win the tennis game one day. That is he has been practicing hard.
| A．why | B．how | C．because | D．where |
Missing the flight means _______ for another three hours.
| A．waiting | B．to wait | C．wait | D．to be waiting |
After I had finished eating, he advise me ______ immediately.
| A．set off | B．set aside | C．set down | D．set about |
-----This returned Chinese scholar has become one of the top experts in this field.
-----Yes, I know him very well. He _____ in Africa with wild animals for eight years.
| A．is working | B．had worked | C．worked | D．has been working |
All________made______possible for China to succeed in carrying on its reforms and open-door policy.
| A．what happened; it | B．what happened; that | C．that happened; it | D．that happened; that |
The pencil________which you wrote just now______me.
| A．in; belonging to | B．\; is belonging to | C．with; belongs to | D．with; is belonged to |