1.) How long did you stay there?/How long was Nick doing his homework? 2.) Where did Sam go yesterday?/ Where was Mary walking until I rang her? 3.) What was Ann doing at 5 o'clock last Friday?/ What did you do last weekend? 4.) Why did you send her an e-mail two weeks ago?/ Why was Ally watching that show from 3 till 4 yesterday? 5.) Whom did Alex write a letter last Monday?/ Whom was you doing a present before I came to you? 6.) How was you clining your room from 5 till 7 yesterday?/ How did you play with her brother yesterday? 7.) When did he start his work?/ When was Peter cooking? 8.) Who did paint this picture?/ Who was working in her garden from 9 till 11 yesterday?
История техники начинается с использования первобытными людьми каменных инструментов. В древности, около 2.5 миллионов лет назад, производились каменные инструменты, использовались огонь, копья, луки и стрелы и простые масляные лампы. В эпоху неолита, около 90000 до н.э., появилось сельское хозяйство, использовались роющие палки и деревянные мотыги. Каменные инструменты улучшились и для срубки деревьев использовались каменные топоры. Люди неолита создавали горшки, ткань, корзины, строили дома и лодки.
Did you use to ride a bike?
Did Bob use to eat broccoli?
I didn’t use to learn Turkish.
We didn’t use to go to France every summer.
Alice used to go to school by bike.
They used to have dinner at this restaurant every Sunday.