the students were even talking toeach other about the topics they were interested in A more happilythe students were even talking toeach other about the topics they were interested in A more happily B happier C more sadly Dsadder
问题描述：
the students were even talking toeach other about the topics they were interested in A more happily
the students were even talking toeach other about the topics they were interested in A more happily B happier C more sadly Dsadder
答
A
答
A
感觉 是因为 用了even（甚至）表递进 比 感兴趣的话题 更积极地词