单选题：Appreciating poetry is _____ getting to know the structure o..

________ the delayed flight will take off depends much on the weather.A．WhyB．WhenC．ThatD．What

With his attention _____ the blackboard, he didn't notice me when I came in.[ ]A. fixed with　 B. fixing in C. fixed on D. fixed to

_____ catch the exam, the girl got up earlier this morning. [ ]A. In order toB. In order thatC. So as to D. So as that

_____ giving us a hand, he stood there laughing. [ ]A. Without B. Instead of 　 C. WhileD. Instead

I've never read a better book than this one. _____, it is the best one that I have ever read.[ ]A. Since then B. In other words C. At times D. In some ways