"I put a letter into the mailbox near my house."
this is stupid. i typed 家の近くのポストに手紙を入れました。and got it wrong... you can say it both ways but my way is more natural.
I did the same thing and it was accepted. Slowly but surely, the course is improving!
I was wondering if it wasn't more natural to put the object before the verb. Guess I'm not the only one thinking that way.
Once again, like in many of these exercises, it does not accept that 'put' is both present and past tense in English.