This is more of a comment than a question.  My problem is that in terms of the grammar, I know all the concepts and have achieved 90% in my progress reports.  I only achieved 50% for this because of the speed and liaison/elision of the speaker.  For example  "moins le quart" sounded to me like moinsquart.  I did not pick up the "le".  Another example "Le taxi arrivera vers six heures et demie", I didn't hear "vers" at all, so substituted "à" for it to make sense.  I need B1 to be successful in an application for citizenship.  Phew!!  I've got a long way to go.