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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． 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
            • 4． ---I've got a headache．
              ---No wonder．You________in front of the computer too long．（　　）
              A．work
              B．are working
              C．have been working
              D．worked
              难度：中等
              解析 收藏 试题篮
            • 5． —Hi, Susan, you look tired.

                —I_________ for months for the coming celebration of our school’s 60th anniversary. 

                

              A．was preparing
              B．have been preparing
              C．had prepared
              D．prepare
              难度：中等
              解析 收藏 试题篮
            • 6． Ever since the new park was opened to the public last month, I ______ a walk in it every morning.

              &; 

              A．am taking
              B．take
              C．have taken
              D．have been taking
              难度：中等
              解析 收藏 试题篮
            • 7． She ought to stop reading; she has a headache because she ________ too long.

                

              A．reads
              B．is reading
              C．has been reading
              D．had read
              难度：中等
              解析 收藏 试题篮
            • 8． Now that she got married, kate          quitting her job, but she  hasn’t  decided  that.

               

              A．had considered
              B．has been considering

               

              C．considered
              D．is going to consider
              难度：中等
              解析 收藏 试题篮
            • 9． --Nice to see you again after all these years. What ________?

                 --Well, I’ve tried many things since we left school. I’m now working for a large oil company.

                

              A．have you done
              B．were you doing
              C．did you do
              D．have you been doing
              难度：中等
              解析 收藏 试题篮
            • 10． We _______ on this project for four hours. Let’s have a rest.
              A．have been working
              B．are working
              C．worked
              D．had worked
              难度：中等
              解析 收藏 试题篮
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