"outside the house there are many trees" should be accepted too. The sentence is correct english and means the same thing.
the 20th of March " outside the house there are many trees" still not accepted
As a reminder, syntax is HARD. It's a messy beast, that even skilled linguists have difficult times fully unpacking at times, so please understand that not all versions of a sentence may be accepted.
I think they're trying to say that the subject of this particular sentence is the trees.
You should put "outside of the house" as correct. It's grammatically correct in English.
So does the location come after the the object? in this case house. I am trying to understand the placement and need help!!!