I've looked for my pen everywhere,but I find it.A．couldn't B．can't C．mustn't D．didn't

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I''velookedformypeneverywhere,butIfindit.A．couldn''tB．can''tC．mustn''tD．didn''tI''velookedformypeneverywhe

I've looked for my pen everywhere,but I find it.A．couldn't B．can't C．mustn't D．didn't
I've looked for my pen everywhere,but I find it.A．couldn't B．can't C．mustn't D．didn't

I've looked for my pen everywhere,but I find it.A．couldn't B．can't C．mustn't D．didn't
B．can't

就

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B
I've looked for my pen everywhere, but I can' tfind it.
1、I've looked=I have looked ，是现在完成时，过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。也就是从过去一个时间点一直到现在，I’ve looked 说明你一直在找，到说话的时候也在找，而且过去那段时间没有找到，现在也没有找到。
2(1看选项，首先C排除mustn't。
(2看Ddidn't和Acouldn't，都是过去式，I have looked 里包含现在，A,D并没有说到现在，句子时态搭配上出现问题，所以答案只能选B。
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