He thought that painting copied by a modern artist was great value and bought it over a

问题补充：

He thought that painting copied by a modern artist was great value and bought it over a thousand dollars.

A. at; for

B. of; for

C. of; at

D. for; by

答案：

A. at; for

(答案→)B. of; for

C. of; at

D. for; by

解析：可联系答.案.网客服索取。