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

游客2023-11-13  18

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 主谓一致。means虽以-s结尾,在此却表示每一种方法,故为单数意义,因此谓语动词应选用第三人称单数。
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