Реши задание на изображении

3a

1. Have you ever been to an Eco-Bazaar? — Present Perfect
   Опыт в жизни, точное время не указано.

2. Yes, I have. — Present Perfect
   Краткий ответ на вопрос в Present Perfect.

3. Last year we organised an Eco-Bazaar to celebrate Buy Nothing Day. — Past Simple
   Действие завершилось в определённое время — last year.

to celebrate — инфинитив, он показывает цель действия: «чтобы отпраздновать».

3b. Возможные варианты

1. Spend all your pocket money on one item

A: Have you ever spent all your pocket money on one item?
B: Yes, I have.
A: What did you spend it on?
B: I spent it on a computer game.

2. Save money for a reason

A: Have you ever saved money for a reason?
B: Yes, I have.
A: What did you save it for?
B: I saved it for a new bicycle.

3. Visit a charity shop

A: Have you ever visited a charity shop?
B: Yes, I have.
A: What did you buy there?
B: I bought a second-hand book.

4. Buy something you regretted afterwards

A: Have you ever bought something you regretted afterwards?
B: Yes, I have.
A: What did you buy?
B: I bought an expensive T-shirt, but I didn’t like it.

Главное правило

• Present Perfect = have/has + V3 — жизненный опыт, время не названо:
  Have you ever visited...?
• Past Simple — конкретное завершённое действие в прошлом:
  Last year we organised...
  What did you buy?

Проверка: в предложении есть last year → нужен Past Simple; слово ever обычно указывает на Present Perfect.