The sentences that use a noun clause are:
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Emily spent several days thinking about what she had to do in order to make a good grade. (The noun clause is "what she had to do in order to make a good grade.")
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Why they didn’t return any of my phone calls or emails is the question I want answered. (The noun clause is "Why they didn’t return any of my phone calls or emails.")
The other sentences do not contain noun clauses.