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Rebecca

Is it correct phrase "by when should I~"?

Is it okay to use "by when should I..." in a sentence? As in to ask, affirm and so on.

1 answers answer to the question Is it correct phrase "by when should I~"?

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bulilia updated 23 December
'By when do I need to...' seems the easiest way to ask, but 'By when should I...' is possible as well. The expression does not seem to be idiomatic, just a common form of a question.
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