Cinderella has been learning Chinese in Beijing University for the past four years.—No wonder she ________ above her colleagues in Chinese.[ ]

Rising sea levels and drought caused byglobal warming could anincreasing number of natural disasters.

Cultural exchange ________ betterunderstanding

When did you know the news— I knew nothing about it _________ myfriend told me

These teams, which _____twenty experienced workers, are working hard here to ___the time they have lost before.