I am completely deaf in my left ear (can hear at 120db the loudest sound in a sound test box) and have a tiny amount of hearing in the right (think its 95 db in this ear cant remember) this enables me to use a hearing aid in the right ear. like the girl in the video i speak very well for some one with my level of hearing which ain`t much but through intense speech and language therapy from 12 months to about 8 years old and also my parents never allowing me to mis pronounce words I speak 99.9% perfectly I do get sentences occasionally mixed up and wont always hear if the person isn't facing me but yes it is possible to speak as well as this lady in the video with severe hearing loss. p.s I lip read very very well I have caught people out hehe!!!