28. An old calligraphy scroll _____ by a famous artist was found last week.
(A) which believed was written
(B) believing to writing
(C) believed to be written
(D) which believing to be written
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統計: A(96), B(10), C(140), D(23), E(0) #3017856
統計: A(96), B(10), C(140), D(23), E(0) #3017856