She has been keen on that for a while now.
Is this sentence grammatical? And is "keen" a common choice for a sentence like this or is a bit unusual?
It is casual, informal English. You can tweet it, or use it in an email or conversation. Don't use it in a formal essay.
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It is casual, informal English. You can tweet it, or use it in an email or conversation. Don't use it in a formal essay.