◎ 题干
Tom's aunt wants to know ________ he has been up to so far,  therefore, she   decided to send
him an e-mail.  
[     ]
A. which      
B. why          
C. what          
D. how
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Tom's aunt wants to know ________ he has been up to so far, therefore, she decided to sendhim an e-mail. [ ]A. whichB. why C. whatD. how…”主要考查了你对  【连接代词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。