6. Fill in already or yet.

Решение:

В данном упражнении нужно вставить слова 'already' (уже) или 'yet' (ещё) в предложения, используя правила Present Perfect.

• 'Already' используется в утвердительных предложениях, чтобы показать, что действие произошло раньше, чем ожидалось.
• 'Yet' используется в отрицательных предложениях и вопросах, чтобы показать, что действие еще не произошло.

Заполненные предложения:

1. Have you had a snack yet? - Yes, we have already had a snack.
2. Have you been to St Basil's Cathedral yet? - Yes, we have already been there.
3. Have they decorated the Christmas tree yet? - No, they haven't decorated it yet.
4. Has she bought the tickets yet? - No, she hasn't bought them yet.
5. Have you paid the bills yet? - Yes, we have already paid them.
6. Has she talked to her parents yet? - No, she hasn't talked to them yet.
7. Has Tina visited the Tretyakov Gallery yet? - Yes, she has already visited it.

Ответ: yet, already, yet, already, yet, haven't yet, yet, yet, already, yet, yet, already.