4. Helen is going to play tennis with Andrew on Thursday
5. Helen is going to visit Ann in hospital on Friday
6. Helen is going to clean the flat on Saturday
7. Helen is going to take a part in the city bicycle ride on Sunday
12.
1. We are going to have a picnic in the park
2. I going to visit him tomorrow
3. He is going to write them about Russia and his new school
4. She is going to join to the English club
5. They are going to take part in the Photo Exhibition