Помогите с 4 и 5 номером.

4. 1 where do you live? 2 What are you doing today? 3 What does BMX stand for? 4 why do you like cycling? 5 how often do you practice here at the track? 6 how many bikes have you got? 7 how much do these bikes cost?
5 1 I often go....2 ...people celebrate...3 ...listening to... 4 does Alex play the guitar? 5 we are going to...6 there are a lot of....7 there isn't any...8 ...classrooms are there at...