Решение:
- 1. Tigers are dangerous animals, aren't they? (Подлежащее 'Tigers' во множественном числе, глагол 'are' в утвердительной форме).
- 2. They have a wonderful garden, don't they? (Подлежащее 'They', глагол 'have' в утвердительной форме).
- 3. He bought an expensive TV-set, didn't he? (Глагол 'bought' в Past Simple, подлежащее 'He').
- 4. You have a terrible toothache, don't you? (Подлежащее 'You', глагол 'have' в утвердительной форме).
- 5. She has read an interesting book, hasn't she? (Подлежащее 'She', вспомогательный глагол 'has').
- 6. We gave all possible answers, didn't we? (Глагол 'gave' в Past Simple, подлежащее 'We').
- 7. I asked a foolish question, didn't I? (Глагол 'asked' в Past Simple, подлежащее 'I').
- 8. It will be a useful exercise, won't it? (Модальный глагол 'will', подлежащее 'It').
- 9. His speech was boring, wasn't it? (Подлежащее 'His speech', глагол 'was' в утвердительной форме).
Ответ: 1-C, 2-B, 3-G, 4-B, 5-E, 6-F, 7-A, 8-I, 9-H.