から / because after スポーツをした

The Bunpro grammar info says that when using から after a noun, you need to use だから.
One quiz question is:
スポーツをしたからいです。
Now isn’t した / tomorrow also a noun? Why is there no だ needed?

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You are thinking of あした(明日).
This sentence uses the verb する (to do) in the past tense (した). :wink:

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Oooh wow, that makes sense then :smiley:
Thank you!

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No problem!

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