8.It took me an hour to finish my homework.(保持句意相同) I______ an hour_______ my homework.

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8.It took me an hour to finish my homework.(保持句意相同) I______ an hour_______ my homework.
8.It took me an hour to finish my homework.(保持句意相同) I______ an hour_______ my homework.

8.It took me an hour to finish my homework.(保持句意相同) I______ an hour_______ my homework.
spent ; finishing