Вставте пропущенный артикль haven't,has or hasn't 1. You look happy. What ... happened? Oh, I ... won the first prize

1. You look happy. What has happened? Oh, I have won the first prize. 2. Let\'s make a fruit salad. Have you bought bananas and apples? 3. The boys have already visited their sick friends, haven\'t they? 4. The tourists haven\'t bought any souvenirs in the shop yet. 5. What have you done? — Ann has already translated the exercise and I have learnt the new world by heart. 6. Have the students written the test? — Not yet.