It was too hard for the firefighters to get close to the burning building. All their attempts to rescue the people trapped were ______.
| A．in place | B．in return |
| C．in vain | D．in danger |
The trade union intended to call on the workers to go on strike _______ the government’s limitation on exports.
| A．in response to | B．in demand of | C．in honor of | D．in favor of |
Traditionally, college students hold a graduation ceremony to encourage themselves before they _______ on their life journey.
| A．give up | B．set off | C．get through | D．settle down |
—Have you heard about the recent election?
—Sure, it _______ the only thing on the news for the last three days.
| A．would be | B．is | C．has been | D．will be |
At the routine office meeting, the headmaster insisted that the problems _______ paid special attention to.
| A．referred to being | B．referred to be | C．refer to being | D．refer to be |
_______ basic first-aid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known | C．Knowing | D．Being known |