Решение:
Заполняем пропуски, выбирая между will и be going to в зависимости от контекста:
- When will you go to Italy? (Спонтанное решение или общий вопрос о планах)
- They are going to buy a new house. (Четкое намерение, план)
- It will rain later. (Предсказание, основанное на наблюдении или прогнозе)
- I think he will pass the exam. (Мнение, предсказание)
- We are going to visit my grandparents next week. (Заранее спланированное действие)
- The sky is dark. It is going to rain. (Предсказание, основанное на очевидных признаках)
- I'm sure she will call you. (Уверенность в будущем)
- She is going to have a baby in March. (Предсказание, основанное на факте)
- He has promised to help. He will help us. (Обещание)
- They have already bought the tickets. They are going to travel to London next month. (Заранее спланированное действие)
Ответ: will; are going to; will; will; are going to; is going to; will; is going to; will; are going to.