probably never - may never

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Ungifted

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Jan 31, 2017
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German
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Germany
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Germany
Can I say these?
1. What caused the explosion?
2. We'll probably never know.
3. We'll probably never know/learn that.
4. We may never learn that.
 
Roman55

Roman55

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Feb 5, 2014
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British English
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Italy
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France
Yes, you can say all of those. 1. is the question and the best answer is 2.
 
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