优优班--学霸训练营 > 知识点挑题
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            • 1.
              I think it’s really _________ hard work for me to finish the job in twenty minutes.
              A.a
              B.an
              C.the
              D.不填
            • 2.
              ________ Browns were having dinner when the telephone rang.
              A.A
              B.An
              C.The
              D./
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