mvc4项目中的智能感知在vs 2012专业版中不起作用？

In my razor views the intellisense is not working. Are there any fixes for this? I'm using the newly released VS 2012 Professional and building a ASP.NET MVC 4 project. The intellisense in my razor views are not working. Is there any fix for this? In my razor views the intellisense is not worki