People started to dig in the area for treasure, ____ caused much damage.
Ever since the financial crisis ________, many workers _______from their jobs.
Was it through Li Ning, ________working at a high school, ________you got to know Wangke?
After the new technique was introduced, the factory produced _______ cars in 2010as the year before.
Not having a good ________ of English can be a serious barrier to achieving your goals.
It is generally believed that mutual understanding ______ a happy marriage and life.