When rates were raised in 1985,postal service officials predicted they would make further rate increase unnecessary for at least three years. (D)
A they would make further rate increase unnecessary
B they would mean that further rate increases would not be needed
C that it would not be necessary for further rate increases
D that the increase would make further rate increases unnecessary
E further rate increases will not be needed
宾语从句that 不可省略，排除 A B E
C 和D 如何区分呢？
