2. 外语
  3. My computer has just (attack) ______ by an unknown virus.

My computer has just (attack) ______ by an unknown virus.

admin2011-02-04  27
问题 My computer has just (attack) ______ by an unknown virus.
选项
答案been attacked
解析 本题考查被动语态。根据句意应该是“电脑被攻击”，而且是现在完成时，所以要用been attacked。
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