Здесь группировка происходит по признаку, что можно взять, а что можно открыть.
Ручку книгу и. т. д. можно взять: Take a pen, a book, a rubber, a ruler, a bag, an exersise-book.
А окно, библиотеку и. т. д. можно открыть: Open the window, a bookcase, a pencil-case, a door.
Надеюсь помог. Удачи:)))
А интернет тебе зачем, для переводчика
1) We live on the planet called Earth
2) Because the Earth is our home: we are living on this beautiful planet and our houses are also standing on it
3) Yes, of course, I want my home will be clean
4) Yes, it is nice to see blue seas and green trees
5) Yes, I want to breath clean and fresh air
6) No, it's very bad to make out planet dirty. We should keep it clean.
7) I must leave it not in the forests, streets and park. I must leave it in a special garbage place.
8) No, I don't leave newspapers in the streets.
9) Yes, I must pick up litter if I see it
10) Yes, kids can and must help our planet. They must keep it clean too.
11) Because our ante must be clean. If it will be dirty,
we all die.
1) I have just washed my hands
2) He has bought the bread right now
3) Mother has received it ( Letter)
4) I have just got a good mark
5) My Granny has just cleaned the flat, so she is tired
6) Father has broken his, so he is unhappy