какие технические новшества появились к концу 19 века в кузнецке???

В баке трактора было 60 л горючего. За 1 ч. работы трактор расходует 6 л горючего. Сколько часов работал трактор, если в баке осталось 24 л горючего?

Сумма трёх внутренних углов оброзававшихся при пересечении двух параллельных прямых третьей равна 235 Найти каждый из этих углов

Change the sentences into Past Simple sentences.

1.We swim in the river.        .......................in the river.

2.They can see a lot of squirrels.     .......................a lot of squirrels.

3.He spends his days off in the country.     .........................his days off in the country.

4.I use the computer a lot.      .................................the computer a lot .

5.I usually send a lot of postcards.        .............................a lot of postcards.

6.We write grammar exercises every day.      ....................grammar exercises every day.

7.He understands everything.         .................................everything.

8.We play tennis every week,she often wins.   .............tennis every week,she often  .....  .

9.She pust on her red coat.          .................on her red coat.

10.They usually meet him after school.       ........................him after school.