помогите пожалуйста

Open the brackets using the correct tense form.

1. When we (to visit) places of interest, we (to take) many photos. 2. My sister (to open) the gift boxes when she (to get) them. 3. The family (to decorate) the chair with the flowers if it (to be) a crown year birthday. 4. If the girls (to turn) 15 in Argentina, they (to have) a wonderful party. 5. The children (to wear) colourful clothes and give chocolate to classmates when they (to celebrate) their birthday. 6. In the Netherlands when children (to be) 5, 10, 15, 20 and 21, they (to receive) an extraordinary present. 7. When children (to have) a birthday, they (to wear) coloured clothes.​​