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            • 1． The little boy ________ in the mud all the morning. No wonder he is dirty from head to foot.
              A．has played
              B．is playing
              C．has been playing
              D．was playing
              难度：中等
              解析 收藏 试题篮
            • 2． —I don't remember having ever seen Mark since last week. Has he gone somewhere?

              — Not really. He_______his newly-bought apartment.

              A．has been decorating
              B．was decorating
              C．has decorated
              D．decorated
              难度：中等
              解析 收藏 试题篮
            • 3． I heard this song on the radio and I’ve been ___________ (吹口哨) it all day.
              难度：易
              解析 收藏 试题篮
            • 4． Mary really________hard on her book and thinks she will have finished it by Satuntay．
              A．worked
              B．has worked
              C．had worked
              D．has been working
              难度：较难
              解析 收藏 试题篮
            • 5． The fans ______ patiently for hours and they will wait till the movie star _____.
               A. have been waiting; arrived                           B. have waited; will arrive
               C. have been waiting; arrives                            D. waited;arrives
              难度：中等
              解析 收藏 试题篮
            • 6． Traffic conditions in Beijing ________ for decades. At first people only complained about jams during rush hours，but today every hour is rush hour.
              A．is worsening          
              B．have worsened         
              C．have been worsening   
              D．worsened
              难度：中等
              解析 收藏 试题篮
            • 7．  Tom ______________ in the library every night over the last three months.
              A．works            
              B．worked
              C．has been working   
              D．had been working
              难度：中等
              解析 收藏 试题篮
            • 8． I ______ to reach the manager for the last two hours but the line is always busy.
              A．tired 
              B．have tired 
              C．had tired 
              D．have been trying
              难度：中等
              解析 收藏 试题篮
            • 9． 27. —Did you find the missing couple in the mountain yesterday?
              —No, but we ___ to get in touch with them ever since.
              A．have tried                                      
              B．have been trying   
              C．had tried　                                     
              D．had been trying
              难度：中等
              解析 收藏 试题篮
            • 10． — You look tired!
                 — Yeah, I ________ since 4 o’clock.
                 A. had played               B. have been playing C. am playing              D. have been played
              难度：中等
              解析 收藏 试题篮
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