Definition: to behave in a noisy, violent, or wild way without being controlled Level: C2
他们允许他们的孩子胡闹。
They allow their kids to ___run ___riot.
节日期间，人群失控了。
During the festival, the crowd ___ran ___riot.
新经理宽松的规则让员工们为所欲为。
The new manager's lax rules let the employees ___run ___riot.
