Deep nested conditionals

gistfile1.cs

var foo = IsThing1True ? "Thing 1":
          IsThing2True ? "Thing 2":
          IsThing3True ? "Thing 3":
          IsThing4True ? "Thing 4":
          IsThing5True ? "Thing 5":
          IsThing6True ? "Thing 6":
          IsThing7True ? "Thing 7":
          IsThing8True ? "Thing 8":
          "Thing 9";