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            • 1． —Did Cathy know anything about her illness?

                 —No. It was not until I told her ______ I knew.

               

              A．that
              B．how
              C．when
              D．what
              难度：易
              解析 收藏 试题篮
            • 2． I find it necessary ________ we should try every means to practice our spoken English every day.

                

              A．that
              B．whether
              C．when
              D．if
              难度：易
              解析 收藏 试题篮
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