_____the teacher couldn’t understand was _____ fewer and fewer students showed interest in his class.
It is reported that the government has ____ the outbreak of violence by sending a large group of soldiers to police the area.
The hip-pop singer is always drawing attention to issues that are usually ignored. That’s ____ is so great about him.
With the world changing fast, we have something new _____ with all by ourselves every day.
—Have you been to the Great Wall? —Perhaps not in my memory. ________, it might have been during my early childhood.
The question that puzzled them is ____ they can get rid of the air pollution in the area.