【题目】We were required not to ______ any important details before they were made public.
A.try outB.make outC.let outD.break out
在线课程【答案】C
【解析】
考查动词短语辨析。句意：我们被要求在任何重要细节公布于众之前不得泄露。A. try out试验；B. make out理解，辨认出；C. let out放出，泄露；D. break out爆发，突然发生。根据语境及选项分析可知，此处指不能泄露任何重要细节。故选C。