Each chapter of CS has exercises. Edition 1 had an Instructor's Guide, published by Addison Wesley, and the parts of this containing the exercises and solutions are available in the book locker.
Addison Wesley have funded a web-browsable Instructor's Guide for Edition 2. It is available here *for local use only*. Click on "Exercise solutions" (top left) then select the appropriate chapter. Outside Cambridge it is available only to teachers - please respect this.