290. Since reforms and opening to the outside, five special economic _____ have been founded in China. They are Shenzhen, Zhuhai, Shantou, Xiamen and Hainan.
23. The harder we work at our lessons, _____.
22. The government officials say that the Art Festival aims at _____ the relationship between nations.
21. After the new technique was introduced, the factory produced ______ cars in 2009 as the year before.
The bird hid _____ food inside trees for the winters.
I'm wondering_____ he expects will win the gold medal in Men's Single.