Grammar+Video

Many students videos cannot be uploaded due to file size or technical issues.
@http://youtu.be/4fmuXJCleHg https://www.youtube.com/watch?v=oh1xeIcv5Ho @http://youtu.be/-tctl-PKO20 @http://youtu.be/XUa_USrQCec @http://youtu.be/pEJgQqYSGEQ @http://youtu.be/b6YGw2h39S4 @http://youtu.be/5nNAxsC3UVc https://youtu.be/BVTByFFtTSE @http://youtu.be/JnoX5MJTaCI @http://youtu.be/A1pmaneA-Ns @http://youtu.be/dIuO1cXqvNs