"We are in August."
Translation:Siamo in agosto.
Just to clarify, another correct translation is: "Siamo ad agosto"
In a nutshell, just to sound better. "a" would be difficult to distinguish since "August" begins with the same vowel. Therefore "d" is added to form "ad" = to
Similar thing happens when you have "e" before a word that begins with a vowel (Donne ed uomini)
Using this "euphonic D" is optional, but recommended when encountering identical vowels or when certain phrases simply sound better: "ad esempio. ( = for example)"
check this for more information: http://italian.about.com/od/grammar/a/aa091708a.htm
http://www.accademiadellacrusca.it/it/lingua-italiana/consulenza-linguistica/domande-risposte/d-eufonica It turns out that the euphonic d can only be used if there is the same vowel in the conjunction and the following word. I think it is a rather newly introduced rule(?). For example: You cannot write "ad esempio" since the vowel in the conjunction is an "a" and the word starts with an "e". It is more advisable to use the expression "per esempio", although "ad esempio" is widely used and accepted while talking. In the sentence "Siamo ad agosto", putting the d is compulsory if you are writing, especially if it's a formal situation, an exam and so on. Some people may be very strict and count that as a mistake. You cannot write "Donne ed uomini", but you can write "Donne ed elefanti". (I'm sorry for the dumb examples, it was just to better explain this rule which I personally find really stupid, as a native Italian speaker). I wanted to clarify this since my teacher made almost all of my class fail because of such a small error last year :)
If "ad" is a correct option why is it not included in the pull-down hints: in, a, nel. The "correct" answer was given to show that I had made a mistake by not using "ad". Ad was not an option and there was no explanation for the error. I believe that it should be "ad" because the "a" is being used before a vowel as "ad agosto." Does the right hand know what the left hand is doing at DUOLINGO? Is there no standardization? Apparently not!!!!!!!!