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Ответ:

Упр.1

1. hasn't it?

2. wasn't they?

3. isn't she?

4. can't you?

5. isn't he?

Упр.2

1. Vasya is painting walls since morning.

2. What are you doing right now?

3. Last months I have failed my Math test.

4. My sister was singing when I returned from school.

5. Have you ever been in Kaliningrad?

6. When does Masha usually work in the garden?

7. The next year I shall learn better.

Объяснение: