She will tell us that each of us has a role ______ in making the earth a better place to live.
Over the past decades, the sea ice ______ in the Arctic as a result of global warming.
Giving up smoking______the risk of heart disease.
Further measures will be taken to ______ our streets of crime.
As the final exam is coming, my pressure ______, and I’m afraid it will ______ my failure.
You’d better go there by train. The train ticket is ______ the airplane ticket.