解析

A．A person who saw the accident． B．The driver of the lorry． C．A police officer． A．Walking along Churchill Avenue． B．Getting ready to cross the road． C．Starting outside a bank． A．At about 8：00 am． B．At about 9：00 am． C，At about 10：00 am． A．A lorry hit a car． B．A car ran into a lorry． C．A bank clerk rushed into the street．