【简答题】How many years is the seller engaged in this business? For ______ years.
【单选题】听力原文:W: Is your sister older than you? M: No, she is 2 years younger. She is 18. Q: How old is the man? (4)
【单选题】How many years did she refused to speak?
【判断题】连接子(connexon) 是锚定连接的基本单位。()