A． To catch suspected murderer
B． To put an end to violent strike
C． To stop gangs' illegal behaviour
D． To train officers and motorcycle polic

A． Officers doing desk job
B． Military leader
C． Motorcycle police force
D． Central governmen

A． wouldn't meet the new standard to measure performance
B． didn't set up performance standard
C． had made good progress
D． didn't have enough head teachers