integration of extensive reading and text books in ELT

Brown (2009) has pointed out that there is almost no integration of extensive reading and text books in ELT. Discuss briefly how you might design a series of tasks that would allow learners at upper-intermediate level to develop their extensive reading sk

Brown (2009) has pointed out that there is almost no integration of extensive reading and text books in ELT. Discuss briefly how you might design a series of tasks that would allow learners at upper-intermediate level to develop their extensive reading skills.
What challenges might you face in the selection both of texts and tasks?