Definition: to work together with someone in order to achieve the same aim Level: B2
西班牙当局与英国警方合作寻找恐怖分子。
The Spanish authorities ___cooperated with the British police in finding the terrorists.
几家公司正在救援工作中合作。
Several companies are ___cooperating in the relief effort.
Martins决定与警方合作抓住并杀死他。
Martins decides to ___cooperate with the police to catch and kill him.
