People read newspapers and magazines in order to keep themselves _____ of what is going on in the world outside.
The project, ________ in 2009, has expanded the city’s cellphone network to cover one million users.
He put forward his suggestion at the meeting that every means ________ to save the crops before the storm came.
We should ________ adjust ourselves to the development of our society.
The teacher accused her ________ not finishing her homework.
Some students didn’t get a brief summary ________ in their essays.