【题目】Mary was silent during the early part of the discussion but finally she ____ her opinion on the subject.
A.gave voice to
B.kept an eye on
C.turned a deaf ear of
D.set foot on

【答案】A
【解析】句意：玛丽在讨论的前一部分是沉默的，但是最后她说出自己对这个话题的观点。A. 将……说出，透露，表明；B. 注意，照看；C.对......充耳不闻；D.踏上。根据语境，故选A。