How can I do a Custom QueryInterface for .NET 3.5?

Question

I have .NET Assembly exposed to COM, and I want to create a custom QueryInterface, otherwise my Class will have to implement a lot of interfaces.

Currently my implementation is like this

[ComVisible(true]
[ProgId("SomeLib.SomeClass")]
[Guid("516E4529-38F1-44EE-B340-ABFA498DC922")]
public class MyClass : Interface1, Interface2......, etc

I want my class not to implement those interfaces, but when QueryInterface is called to return an object that implements the requested interface. I know this feature exists for .NET framework 4.0 (see ICustomQueryInterface ) Unfortunately I need to do it in 3.5