All the teachers and students _________ National Day with a party.
| A．celebrated on | B．celebrated |
| C．congratulated on | D．congratulated |
16. Jenny kept begging Father for a new bicycle, and finally her father ______.
| A．went through | B．cared about | C．added up | D．gave in |
15. Not until father came in ______ to prepare my lessons.
| A．I began | B．did I begin | C．I had begun | D．had I begun |
14. The world is changing every day. ______ a happy life, we need to learn how to change our ways.
| A．To live | B．Lived | C．Having lived | D．Living |
13. He can’t ______ any new jobs at this time. He already has more than he can do.
| A．take on | B．take off | C．take in | D．take down |
12. Mr. White works with an imp
ort and export company, but he ______ for this industrial fair, s
ince he is on leave.
| A．has worked | B．works |
| C．has been working | D．is working |