— Why is the chemical plant closed?— Because large quantities of waste water ______ into the Yangtze River.
The trade union intended to call on the workers to go on strike _______ the government’s limitation on exports.
Traditionally, college students hold a graduation ceremony to encourage themselves before they _______ on their life journey.
—Have you heard about the recent election? —Sure, it _______ the only thing on the news for the last three days.
At the routine office meeting, the headmaster insisted that the problems _______ paid special attention to.
_______ basic first-aid techniques will help you respond quickly to emergencies.