какие модели называются натурными? приведите 2-3 примера натурных моделей

 АААА... РЕБЯТ ПОМОГИТЕ ПЛИЗЗ

Fill in the blanks with appropriate words where it is necessary

1)I would like to invite my British pen friend ..... Moscow

2)I propose ..... that he comes .... 15 days .... May

3)I"ll be responsible ... the educational and social programmes

4)He"ll stay ...my family

5)I hope he won"t miss ... his family ... his stay ...Moscow