p 1

p2

p 3

Key to the exercises
Exercise 1
36 teenagers are being questioned (Present continuous – passive form)
24 are being tried (Present continuous – passive form)
Teeenagers are often held responsible (Present simple – passive form)
It now appears that juvenile violence is growing (Present simple- active form )
If increases continue (Present simple – active form )
the number of arrests are expected to (Present simple – passive form)