Is there a chair in the room?
Are there six chairs in the room?
There were two chairs in the room.
There aren't any chairs in the room.
Was there a table in the room?
Это конечно не точно , но ,,Чтобы написать командный провод,,
21. ожидать ожиданий, предполагает, прогнозирования, ожидания, непредвиденного