2. Скажи, что, возможно, это случится.

Решение:

Для образования предложения, выражающего возможность, используем модальный глагол 'may' или 'might'.

1. He may go shopping with me.
2. They may bring their toys.
3. He may swim in the river.
4. She may clean her room.
5. I may help my mother about the house.
6. We may go to the country.

Ответ: 1. He may go; 2. They may bring; 3. He may swim; 4. She may clean; 5. I may help; 6. We may go.