It is worth looking out for the other assistants, who can really help form a social basis in the country where you are working. And if in private sector, is worth taking it upon yourself to look into existence of other language assistants who are working in the public sector. If you’re worried about this limiting your contact with the foreign language, be honest about it. You could always talk the language you are studying between you and work on enlarging your network to include max number of native speakers as possible.