Чем, по мнению Митрофана, отличается существительное от прилагательного и есть ли в его ответе здравый смысл? Фонвизина «Недоросль»

1 were received
2 is eaten
3 are built
4 was given
5 will be done
6 will be sent

1 The electric bulb was invented by Thomas A. Edison in the 17th century.
2 The flowers are watered by them regularly.
3 This ballet will be staged by the famous ballet dancers in 15 countries.
4 The Kalahari Desert was explored by D. Livingston from 1841 to 1852.
5 The roof of the house will be painted by the boys.