Verb conjugation of "unhinge" in English

The connecting flight to Phuket was fully booked, and the connection to Krabi had five empty seats. The problem was that the boarding began in ten minutes and I did not even have a ticket.
I remember once again how I failed as a student, mainly in French class. Since I have lived in Russia, it was not easy to learn other foreign languages. The alphabet is also different.
I am a kindergarten teacher for children between age 4 and age 5 and additionally I teach at a school here in Munich: music, painting and handicraft. At the moment just we have holidays.