The girl________ to be a good dancer if she is well trained in an art school.
18. The _____ I know him, the _____ I admire his abilities.
17. The boy sat at the top of the hill, looking at the valley ______.
16. I have never heard such a beautiful song _____.
15. With the development of West China, many technicians are _____ needed there in recent years.
14. China has a lot of coal and oil, and it is rich in other rare minerals ______.