1. A．口语习惯表达，根据小对话逻辑，选A
2. C. for fear of = to avoid the danger of sth happening(以免)。据题，既然got to the station early就可以避免missing his train，故选C而不选in case of（以防万一或一旦发生/出现）。该题有点难度。
3. C. 反义疑问句特殊考查。must have been反义疑问句动词的选择应该根据must后面动词实际时态形式确定，与must无关。据during the past Spring Festival，选用一般过去。
