The police found the witnesses' words very helpful.
举一反三
- The police found the two witnesses ______ in their investigation into the robbery. A: cooperate B: cooperative C: cooperatively D: cooperation
- The police found many linkages between the crime scene and the suspect. A: fingerprints B: witnesses C: similarities D: connections
- ______ here are helpful. A: The policeman B: Police C: Policemen D: The police
- Tom was very helpful.
- The ____ in the restaurant were all very friendly and helpful.