<P>What do people usually do<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </U>New Year?</P>
<P>A.at&nbsp;&nbsp;&nbsp; B.on&nbsp;&nbsp;&nbsp; C.in&nbsp;&nbsp;&nbsp; D.about</P>

迷惑~

选at,因为New Year 就是指一月一日这一天呀

A.at

谢谢，学习了