Once again, thank you for your question.
Youth employment centres adapt to their environment and to young people's needs. So Montreal is not the only place where young people speak only English. There are unilingual anglophone young people in a number of regions. In those cases, services are provided by the youth employment centre, where connections are made with anglophone organizations that can help translate the tools used, among other things.
There are young people for whom it may be difficult to do an internship in French, and conversely, there are others for whom it may be difficult to do one in English. So a support service is provided.
Generally speaking, services are adapted to young people. Translation is provided when necessary.