She promised to ______ at the meeting but she didn’t ______.
Studies show that Americans chat on their phones for more than five hours a month, _____ Europeans.
Although many measures _____, the world’s economy is still going down.
The teacher asked the two students to discuss the question in a low voice______ they should bother the others.
One third of the country_____ covered with trees and the majority of the citizens______ black people.
Steve Jobs’ death _______ quickly and soon became the talk of the whole world.