問題詳情
30. ________ four gold and two silver medals at the 2012 Summer Olympics in London, Michael Phelps wascongratulated by President Obama.
(A) To win
(B) Having won
(C)To have won
(D) Having been winning
參考答案
答案：B
難度：適中0.619048
統計：A(31),B(130),C(12),D(17),E(0)