What should you do before turning left off a two-lane highway?

• You should do a left shoulder to be sure that you are not being passed by another vehicle on your left
  Explanation:

  "Before turning left off a two-lane highway, do a shoulder check to the left to be sure you are not being passed by another vehicle on your left."
• You should come to a complete stop in the middle of the turn to safely clear the intersection
• You should activate your right turn signals to warn the oncoming traffic about your move
• You should slow down and pass the oncoming traffic by using the right-of-way