题目内容
No conclusion _________ about the new product until the result of the experiment has been announced.
| A．is drawn | B．was drawn | C．will be drawn | D．has been drawn |
C
解析试题分析： 句意：直到实验结果被宣布才能得出关于新产品的结论。Until引导的是时间状语从句，用的是现在完成时，代替将来完成时，所以主语用一般将来时，选C。
考点：考查时态
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龙人图书快乐假期暑假作业郑州大学出版社系列答案—I hear Jane has gone to the Holy Island for her holiday.
—Oh，how nice！Do you know when she ________？
| A．was leaving | B．had left |
| C．has left | D．left |
---I _____ to a party, but I’ve got nothing to wear.
--- Why don’t you have a dress made for the party?
| A．was asked | B．will ask |
| C．have asked | D．have been asked |
The country life he was used to ________ greatly since 1992.
| A．change | B．has changed | C．changing | D．have changed |
_______ for many times, he still hopes to win.
| A．Failing | B．Failed | C．Having failed | D．To have failed |
---Joan, what _______ in your hand ?
---Look! It’s a birthday gift for my grandma.
| A．are you holding | B．had you held | C．do you hold | D．will you hold |
—I’m going to see John tomorrow.
—Don’t tell him the result of his medical examination when you __________ to him.
| A．talk | B．have talked | C．will talk | D．talked |
----when are you going off for your holiday?
----My plane ______ at 9:20, so I must be at the airport by 8:20.
| A．took off | B．has taken off |
| C．is taking off | D．would take off |
My uncle ______ in Beijing for over 10 years. Now he lives in his hometown in Fuzhou.
| A．has worked | B．worked | C．had worked | D．works |