2. 外语
  3. Care must be taken in using this method lest overflow______.

Care must be taken in using this method lest overflow______.

admin2014-07-20  24
问题 Care must be taken in using this method lest overflow______.
选项 A、should occur
B、occurs
C、occurred
D、will occur
答案A
解析 虚拟语气。以lest，for fear that和in case引导的状语从句中，谓语多使用should+V原形。
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