Nancy will be back time to prepare dinner.? 2. the development of science,people
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1.Nancy will be back ______ time to prepare dinner.?
2. ______ the development of science,people are getting more advanced life.?
3.One person's success can't depend ______ luck.?
4.All the watchers cheer ______ when the last runner reached the finishing line.?
5.I don't know when the fire broke ______ in the supermarket.?
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