When Helen saw her tutor nod to her she calmed down and went on with her performanceA.

问题补充：

When Helen saw her tutor nod to her, she calmed down and went on with her performance．

A. encouragingly

B. amazingly

C. interestingly

D. willingly

答案：

(答案→)A. encouragingly

B. amazingly

C. interestingly

D. willingly

解析：副词辨析。A鼓励人地。勉励人地；B让人惊讶地；C有趣地；D愿意地；句意：当Helen看见她的老师鼓励地向她点头的时候，她镇定地继续她的表演。故A正确。