Question

Tom is said _______ a new computer programme recently, but I don’t know when he

Tom 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 designed
D. to have been designing

Answer 1

答案D
此题考查不定式的几种时态的区别。不定式的一般式表示将要发生的动作，进行式表示动作正在进行，完成式表示已经完成的动作，完成进行式则表示动作从过去到现在这一段时间内一直在进行。本题从句没有确定动作是否已经完成，故用不定式的完成进行式。