单选题 Sally was a bit shy, but the teacher found her quite______ discussing a recent film with others.

【正确答案】 A
【答案解析】A.at home“无拘束”;B.at most“最多”;C.at house不是固定短语;D.at heart“在内心里”;故选A。[句意]萨利有些腼腆,但老师发现她在毫无拘束地和别人讨论最近的一部电影。