250. Jack is a very stubborn(顽固的) person. I was unable to _____ him to do as I said. I want to ask you to have a word with him.
| A．let | B．make | C．prevent | D．Persuade |
------Is your father a teacher of English in the No.l Middle School?
-------No! But he _________ English there for ten years.
| A．has taught | B．has been teaching | C．taught | D．had taught |
Your suggestion on how to improve English writing ability is too general. Could you make it more _______?
| A．particular | B．specific | C．special | D．relaxing |
The annual Christmas party last night was _____success. We sang and danced until it came to ____end at 12∶30.
| A．a；an | B．a；the | C．the；an | D．/；an |
I really appreciate ____ time to relax with you on this nice island.
| A．have | B．having | C．to have | D．to having |
John thinks it won’t be long _____ he is ready for his new job.
| A．when | B．after | C．before | D．since |