Помогите пожалуйста! Поставьте предложения в прошедшее и будущее время, введя соответственно обстоятельства времени.

1. It’s easy to understand this text, isn’t it? 2. It’s interesting to listen to your stories. 3. Is it difficult for you to learn grammar rules? 4. It’s dark in the room, isn’t it? 5. It doesn’t often snow here in winter. 6. It doesn’t rain here very often at this time of year. 7. It’s important for me to finish the work today.