Moyan got the Nobel Prize in his _________.A. fifties B. fifty C. fiftieth
- You don't know what great difficulty I had _______ to get the two tickets.- But the film is really worth_______ twice.
- _______ for your step, Jim, or you might fall into the lake. - Well, I got it.
- Late again! Where_______? - Sorry, I_______ in the heavy traffic on my way here.
- The twins look almost the same. - They are similar_______ many ways though they are brought up_______ different families.
- Why did you _______ change your mind? -I realized my plan wasn't practical after a long discussion.