Completar frases Wide Angle 3 Unit 2.3Versión en línea Grammar in context: Used to por Guadalupe Soto Reyes 1 didn't used were use wasn't Before there alarm clocks , how did people to wake up ? Well , many people use to worry about time so much because they worked on the land . However , as people started to work in factories , being on time became more important . Because many workers to be late getting to work , factory owners employed a " knocker - upper " . This person used a long stick to wake people up by knocking on their bedroom windows . Ths seems funny now , but back in those days there any other way !
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