why do you imagine the child uses this old tool __?A:about B:of C:for D:byTOOL与这四个词分别代表什么意思,此题考查的是什么?

I can't imagine why. Can you imagine the difficulty I^^^Can you imagine the difficulty I had __settling___ these problems?why settled can't? why don't you do=why not doing why not 同义词是 why don't you 还是 why don't you do How do you say goodby to someone you can't imagine living without? How do you say goodbye to someone you can't imagine living without? How do you say goodbye to someone you can’t imagine living without? 这段话什么意思? why shouldn't you do还是why you shouldn't do you can't imagine how much difficulty i had doing那么什么时候用to do Do you understand?That don't you why say是什么意思 You don't kown me why do you join me? 为什么是 Why don,t you like koalas 不是 Why do you don,t like koalas? why do you say like I don't understand why do you say like thiswhy do you say like this Can't imagine the world without you.. why not后加do还是to do?why don‘t you 后面呢? Why not do sth.=Why don't you do sth.=什么? why not do sth.=why don't you do sth.还等于什么 How do you say goodbye to someone you can’t imagine living without?在线翻译之类的就免了.