专四

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

A.at home 
B.at most 
C.at house 
D.at heart

参考答案:A进入在线模考
【译文】萨莉有些腼腆,但老师发现她在毫无拘束地和别人讨论最近的一部电影。
【解析】考查介词短语。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。