1. Our city has developed into a big city, which is ______ it used to be.
A. four times larger than that B. four times the size of what
C. four times the size larger than what D. as four times the size as that
2. The key ______ the problem between the company and the consumers is ______ the demands ______ by the consumers.
A. to solving; to meet; making B. to solving; to meet; made
C. to solve; met; making D. to solve; meeting; made