Language study

Read the text and underline all of the verbs
Decide which tense each verb is and whether it is active or passive
Why has the passive voice been used for some of the verbs?

ARMED RAIDERS IN CENTRAL BANK DRAMA

Armed robbers have escaped with an undisclosed quantity of cash in a daylight raid on a bank in Central. It is thought that at least ten million dollars in cash and other valuables were taken but the bank has not yet revealed how much. (4 verbs)

Police arrived within minutes after shots were heard coming from inside the bank and a member of the public dialed 999. A large area of Central was sealed off bringing traffic to a standstill. However, all of the thieves managed to escape leaving customers and staff in a state of shock. 
(8 verbs)

‘We were told to lie on the floor and told that if anyone moved they would be shot,’ one customer told reporters. (6 verbs)

Det Supt Andy Chan of ‘B’ Division later made a statement saying that no arrests had been made so far but he was confident the men would be found soon. (5 verbs)