Jaclyn Chua I don't really know how to explain why the latter two sentences used the word "did" and why the first sentence didn't. " is the subject of the first sentence. Do not use the auxiliary "do", "does", or "did" when the question word is the subject.
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Jaclyn ChuaI don't really know how to explain why the latter two sentences used the word "did" and why the first sentence didn't.The question word "Who?" is the subject of the first sentence. Do not use the auxiliary "do", "does", or "did" when the question word is the subject.