2. 外语
  3. Every means_____tried out but never with success, as far as my knowledge goes.

Every means_____tried out but never with success, as far as my knowledge goes.

admin2012-06-19  30
问题 Every means_____tried out but never with success, as far as my knowledge goes.
选项 A、is
B、are
C、has been
D、have been
答案C
解析 means虽以s结尾却是单数形式，因此谓语动词应选用第三人称单数。
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