I think e I don't think non vengono mai usati da soli, ma vengono sempre seguiti da so, come nell'esempio, o da una proposizione come nel caso di I think/I don't think he went to the concert.
Every town and city in Italy has its own patron saint. The patron saint's feast day, which is different for every saint, is a local and school holiday with religious processions and fairs. Some towns put up illuminations for the day.