For practice I suggest that you do parts 1 to 4 online and parts 5,6,7 from a printed pdf and then check your answers.
Try to keep to the time limit ( 75 minutes) and use the strategies suggested on the course and or on this site!
You need 60 percent to pass but you do not need to pass every part - just 60 percent overall.
In the exam you do not need to start with Part 1 and finish on Part 7 - the order is up to you - so think about it!