优优班--学霸训练营 > 知识点挑题
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            • 1．  I'm puzzled why he ______ back to me. He should have heard from me.
              A．hasn't written 
              B．didn't write       
              C．doesn't write  
              D．hasn't been writing
              难度：中等
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            • 2． We all know laws to discourage the use of plastic bags _______ in many parts of the world．
                       A．passed                          B．have passed
              C．had been passed     D．have been passed
              难度：中等
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            • 3． Lin Yi isn’t what it used to be．The last decade ______ great changes in the city images．
                       A．witnessed            B．was witnessed                                                  
              C．has witnessed      D．had witnessed
              难度：中等
              解析 收藏 试题篮
            • 4． According to China Daily, since June 4, when the first oil was discovered, the leaks（泄露）n Bohai Bay _____ at least 5,500 sq km of sea．
                       A．have polluted                             B．have been polluted
                       C．polluted                                   D．were polluted
              难度：中等
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            • 5． This is the second time Nie Haisheng ______ to be the astronaut who took the glorious task．
                       A．has been chosen     B．had been chosen　   C．was chosen            D．chose
              难度：中等
              解析 收藏 试题篮
            • 6．  I want to buy that kind of pen because I ________ the pen ________ well.
              A．have told； writes  
              B．have been told； writes
              C．was told； wrote    
              D．have been told； is written
              难度：中等
              解析 收藏 试题篮
            • 7．  —— ________ David this morning?
                  —— Not yet, but he is sure to be here before noon.
                  A. Have you seen                 B. Will you see
                  C. Do you see                       D. Did you see
              难度：中等
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            • 8．  I want to buy that kind of cloth because I _____ the cloth _____ well.
              A．have told; washes            
              B．have been told; is washed
              C．was told; washed             
              D．have been told; washes
              难度：中等
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            • 9．  ---_____ my photos _____ yet? I need one to stick on my application form today.
              ---Yes. Here you are.
              A．Did; develop      
              B．Were; developed
              C．Have; developed 
              D．Have; been developed
              难度：中等
              解析 收藏 试题篮
            • 10． --- Tom, can you answer my question?
              ---Er, I’m very sorry, Miss Evens． I_______________  about something else．
              A．had thought             
              B．was thinking         
              C．will think                  
              D．have thought
              难度：中等
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