It's sad ________ so many animals ________.A.to hear about; have goneB.to hear of; have beenC.hear about; have goneD.hear of; has gone
网友回答
A解析点拨：“听说那么多的动物灭绝了真伤心。”it是形式主语，真正的主语是后面的动词不定式，故先排除C和D项。have gone既有“去了某地”也有“死了的，灭绝的”之意，而have been只有“去过或呆在某地”之意，所以B不正确。