When buying question packages, you are buying a quota of questions from our database and not specific questions. This means that in the Start New Test block you can choose which language(s) you want to do your practice tests in. You do not pick this up at the time of purchase.
TIP: make sure you click on the little (i) in the table on the Products tab to see how many questions we have in a particular language per test so you don’t over-purchase.