可以。如：　　

It doesn’t matter what he says. 他說什么沒關系。　　

It was clear enough what he meant. 他的意思是很明顯的。　　

It hasn’t been decided who will be sent to work there. 還沒決定將派誰到那里工作。　　

It struck her how gentle he was being. 她深深感到他多么溫存。　　

It hasn’t been made clear when the conference is to take place. 會議什么時候召開還沒有宣布。　　

It’s not known where she went. 她到哪里去了沒人知道。　　

It did not matter much where he lived. 他在哪里住都沒有關系。　　

It was clear why he had asked for a conference. 他為什么要求召開會議原因很清楚。　　

It makes little difference whether we go or stay. 我們去還是留沒有多大差別。　　

It’s not yet settled whether I am going to America. 我去不去美國還沒定。