In Lesson 40, Improvising Pattern 1 was introduced and the three main types of chord progressions were discussed. To practice using this pattern, improvise against the chord progressions in the following exercises. They have been divided into Blues, Major key and Minor key progressions. If you want to learn to play these chord progressions, see Progressive Guitar Method: Rhythm or Progressive Rock Guitar Method.
Refer to the chart at the end of Lesson 40 to show you which position Pattern 1 should be played for each of the three different progression types.