Easy Reader by Randall Wallace
Chapter 1
a) Vocabulary
b) Verbs in simple past
Chapter 2
a) So many tenses 
!
b) Sentence endings: Find the right one!
c) The three forms of the verb, part I
d) The three forms of the verb, part II
e) The three forms of the verb, part III
Chapter 3
a) Focus on prepositions
b) Vocabulary
c) Sentence puzzle I
d) Sentence puzzle II
e) Sentence puzzle III
f) Sentence puzzle IV
The final crossword