I live on an 3i___ in a small 4t___ by the sea. We have a lovely garden with lots of flowers.

1. The missing word for '3i' is likely 'island'.
2. The missing word for '4t' is likely 'terrace' or 'townhouse'.
Example completion: I live on an island in a small terrace by the sea. We have a lovely garden with lots of flowers.