GWD**9-Q32**

[eddybasic]

The United States minted about 857 silver-colored "Susan B. Anthony" dollars between 1979 and 1981, but the coin proved unpopular because it looked and felt too much like a quarter.

(B)About 857 million silver-colored "Susan B. Anthony" dollars between 1979 abd 1981, but the coin
(C)About 857 million silver-colored "Susan B. Anthony" dollarsthat were minted between 1979 and 1981 in the United States
(D)About 857 million silver-colored "Susan B. Anthony" dollarsthat the United States minted between 1979 and 1981
(E)Between 1979 and 1981 the United States minted about 857 million silver-colored "Susan B. Anthony" dollars,which


答案是A
不過我想請問說coin可以證明東西嗎
因該是被證明巴
如果說proved表示被證明的話那應該前面要有was八
如果說proved是分詞片語修飾coin的話
那but後面的副詞子句就沒有動詞了

請NN幫忙釋疑