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

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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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大学英语三级A级

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