Michael is said ______ a new computer programme recently,but I don't know when he will finish it.
问题描述：
Michael is said ______ a new computer programme recently,but I don't know when he will finish it.
A.to design
B.to be designing
C.to have been designing
D.to have designed
我想选B 正确答案是C 为什么啊
正确答案是：
答
选C 时态上是现在完成进行时态 表示到目前为止一直在进行的事情
句子的意思就是 据说迈克最近在设计一种新的计算机程序,但是我不知道他何时将完成.
强调到目前为止一直在做某事,进行时态.