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5 By the mid-seventeenth century. Amsterdam had built a new town hall So large that only St. Peter.s in Rome. the Escorial in SpaIn. and the Palazza Ducale In Venice could rival it for scale or magnificence.

(A) could rival it for

(B) were the rivals of it in their

(C) were its rival as to

(D) could be its rivals In their

{E) were rivaling its

The answer is A. What is wrong with C?

Thanks

请问rival   for  是固定用法吗

rival for/in sth. 是个固定用法

除了2楼的解释 c选项as to后面要接动词的 所以也不对