Kathy’s cat is so cute and lovely, but I don’t think I have enough time to keep ______.
| A．this | B．that | C．it | D．one |
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 |
11. Madonna ______ a straight–A student, but it was dancing that she was really crazy about.
| A．must be | B．could be |
| C．must have been | D．could have been |