Употребите следующие предложения как придаточные дополнительные

I want to build a water park in Kaliningrad, because there is no good water park. The project was created with the help of foreign experts from Germany, Poland, Lithuania and France. In construction participating builders from different countries, such as Norway, Finland, Russia . 

Most recently, we built the first water slide. Currently under construction are two water slides. The plans to build another five slides and 3 pools for people who already know how to swim, 2 pools for those who want to learn to swim and 1 pool for children. 

We also need to build changing rooms, showers, toilets, saunas. We also plan to open a coffee shop, what would people after swimming to rest after drinking the juice or coffee. 

In the future we hope that this will become a popular water park that would relax with family and enjoy the time spent.