1) aren’t we?
2) hasn’t it?
3) don’t we?
4) didn’t it?
5) isn’t it?
6) did you?
1. came, had cooked
2 returned,had done
3 entered ,had opened
4 gave, had bought
5 showed, had drawn
6. gave, had brought
7. saw, hadn't washed
8. understood, didn't do
9. knew, didn't come
10. returned
11.had retuned
12. finished
13.had finished
14 thought. lost
15.told , saw
16.woke up, had gone
17 thought, didn't come
18 told, cooked
19 found, lost
20 came,had left
In the classroom
или
in the my classroom
Listening,going,studying,watching,going
2)not started
на все слова выделенные в скобку меняещь на глагол,если нет сзади книги их варианты то добавляешь (ed)