Identify the main skill being practiced in the lesson, in particular exercises 1-4 in book learning

Identify the main skill being practiced in the lesson, in particular exercises 1-4 in book learning teaching (the essential guide to English language teaching) , and discuss the staging of the lesson in terms of pre-, during and post-skill activities, as well as what sub-skill(s) each exercise targets.
The activity ‘Language Work on p 11 targets question formation. What should a learner know about meaning and form in order to carry out this activy successfully?
(You are strongly advised to look up the items in a grammar reference books or other appropriate academic resource.)
3. Discuss how the extract fits into the Communicative Language Teaching approach.
4. Discuss cultural implications of using this lesson with a multilingual, multicultural EFL class.