问题补充：
The shoes are and are worth .
A. of great quality; to buy
B. great quality; to buy
C. of great quality; buying
D. great quality; buying
答案：
A. of great quality; to buy
B. great quality; to buy
(答案→)C. of great quality; buying
D. great quality; buying
解析：可联系答.案.网客服索取。
