A completely new situation will ______ when the examination system comes into existence.
The news shocked the public,__________ to great concern about students' safety at school.
Plastic bags are provided for our convenience but they have also __________ the pollution of the environment.
Look over there-there's a very long, winding path __________ up to the house.
The printer is of good quality. _____ it break down within the first year, we would repair it at our expense.
Maintaining(维持) peace and stability of the South China Sea and the East China Sea will certainly ____ a more promising Asian-Pacific area.