The United States minted about 857 million 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.
A. The United States minted about 857 million silver-colored “Susan B. Anthony”
dollars between 1979 and 1981, but the coin
B. About 857 million silver-colored “Susan B. Anthony” dollars were minted as
coins in the United States between 1979 and 1981 but
C. About 857 million silver-colored “Susan B. Anthony” dollars that were minted
between 1979 and 1981 in the United States
D. About 857 million silver-colored “Susan B. Anthony” dollars that 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
我明白从单复数中可以知道是A，但是A中but the coin proved unpopular because it looked and felt too
much like a quarter.是独立主格吗？有必要使用独立主格吗？如果不是，是不是应该加个was变成
but the coin was proved unpopular because it looked and felt too
much like a quarter。
求教！