一个晴朗的午后，当我高兴地骑车回家时，我听到（有人喊）“救命！
One sunny afternoon, when I was merrily riding home, I heard "Help!
当我高兴地向陌生人做自我介绍，并加入团体讨论时，许多人误认为我是一个性格内向的人。
Many people mistake me for an extrovert when I gladly introduce myself to strangers join in group discussions.
当我告诉妈妈跳绳为你做了什么，她会高兴的。
Mother will be pleased when I tell her what the skipping-rope did for thee.
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