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.
Michael is said ______ a new computer programme recently,but I don't know when he will finish it.
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：
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：
英语人气：454 ℃时间：2019-10-23 11:27:52
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