题目内容
Every means _________tried but without any result.
| A．have been | B．has been |
| C．are to be | D．is to be |
B
解析试题分析：考查动词的时态。句意：每一种办法都度过了但是没有效果。首先确定means与try之间是被动关系，根据题中出现的without any result 可知已经尝试过了，所以选B项。
考点 : 考查动词的时态
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| A．treat | B．was treating |
| C．will treat | D．have treated |
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