问题
选择题
Your cousin is said ________ a new computer program recently, but do you know when he will finish it?
A．to design
B．designing
C．to have been designing
D．to have designed
答案
答案：C
C 句意：据说你表弟最近正忙于设计一款新的计算机程序，你知道他什么时候能完成吗？sb.is said to...某人据说……，故排除B、D选项，根据recently可知用完成时态，因此选C项。