单项选择题
A．to find the suspect B．to find the murdered couple C．to arrest the suspect D．to search a 1950 or 1951 Chevrolet
A．with the help of a Chevrolet owner B．with the help of computers C．by a witness D．in a car
A．he was driving along a lonely road B．he had taken a stranger in his car C．he saw a police-car D．he was afraid that the man might rob him