As the economy is getting better and better there are more and more jobs .A. valuable B.

问题补充：

As the economy is getting better and better, there are more and more jobs .

A. valuable

B. previous

C. available

D. convenient

答案：

A. valuable

B. previous

(答案→)C. available

D. convenient

解析：形容词辨析。A贵重的；B之前的，原来的；C存在的，可以利用的；有空的；可以得到的；D方便的，便利的；句意：因为经济变的越来越好，有更多的工作可以得到。根据句意说明C正确。