CET 等级考试◆CET4題庫下載題庫

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43.Anna was reading a piece of science fiction, completely _______ to the outside world.
(A) having been lost
(B) to be lost
(C) losing
(D) lost


答案:D
難度: 計算中

43.Anna was reading a piece of science f..-阿摩線上測驗