—Who should be responsible for the accident?—The boss, not the workers.They just carried out the order .
In April, thousands of holidaymakers remained ________ abroad due to the volcanic ash cloud.
Today we have chat rooms, text messaging, emailing ... but we seem ________ the art of communicating facetoface.
The engine just won't start.Something seems ________ wrong with it.
It's no use ________ without taking any action.
No matter how bright a talker you are, there are times when it's better ________ silent.