Допоможіть будь ласка даю 20балів

. I used to study Japanese.. 3. I didn't use to do exercises. 4. My classmate didn't use to study hard. 5. A long time ago people didn't use to have electricity. 6. When I was young I used to be lazy. 7. A long time ago people didn't use to have TV. 8. When Sarah was younger she used to be short.

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