优优班--学霸训练营 > 知识点挑题
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            • 1．

              Listen! Someone _______ at the door. I will go and see who it is.

              A．has knocked
              B．knocks
              C．are knocking
              D．is knocking
              难度：较易
              解析 收藏 试题篮
            • 2．

              “Standing inside the large spaceship______ lots of white-skinned, strange-looking creatures with large black eyes”, said Kelly.

              A．were                  
              B．was                         
              C．have been                
              D．has been
              难度：易
              解析 收藏 试题篮
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