Stay awake! You should know that it ________ to sleep in class.A．doesn’t permit
题型：不详难度：来源：
Stay awake! You should know that it ________ to sleep in class.| A．doesn’t permit | B．is not permitted | | C．will not be permitted | D．was not permitted |
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答案
| B |
解析
试题分析：句意：保持清醒，你应该知道在课堂上是不允许睡觉的。这里it是形式主语，to sleep in class是真正的主语，根据Stay awake可知说的现在不能睡觉，所以应该用现在时故选B。
点评：本题难度适中。动词时态及语态是高中阶段的重难点之一，高中要求掌握的时态需要考生牢记它们的用法，但是时态必须要结合一定的语境才能做出正确的判断。
即学即练：--- I hear you _______ at Smith’s.
--- Yes, I________there for about three months.
A．work; had been working
B．worked; was working
C．are working; have been working
D．worked; have worked
解析：C。句意：---我听说你在史密斯那里工作。---是的，我一直在那里工作了3个月。 |
举一反三
I first met Mr Smith in America. He ________ at Stanford University then.| A．studied | B．had studied | | C．is studying | D．was studying |
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Yao Ming, now a student of Shanghai Jiaotong University majoring in financial management, _______basketball in NBA for nine years.| A．has played | B．was playing | | C．has been playing | D．played |
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The past two years ______a sharp rise in oil price, which adds to the burden of auto transportation industry.| A．has witnessed | B．witnessed | | C．is witnessing | D．witnesses |
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Marry _____ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.| A．has served | B．had served | | C．has been served | D．served |
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The Guangxi Zhuang autonomous region _______ $ 1.59 billion worth of trade with the Association of Southeast Asian Nations in the first two months of this year.| A．has seen | B．saw | C．had seen | D．sees |
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