11.  Professor Hunter was very excited that morning because he had just finished the papers of his invention.

12.  We must finish it quickly.

13.  We had only thirteen days to do it so that I had almost finished the homework before February 1.Except maths and physics, I must wasted a long time to work out every question.

14.  I almost finished my homework.

15.  I come to know when we do everything, we don't give up until we finish it.

16.  The Professor And His Invention Professor Hunter was very excited that morning because he had just finished the papers of is invention.

17.  In this winter holiday I must finish much homework, every day I do my homework, over three times and then go over my lesson, include during the Spring Festival.

18.  This days I am going to finish my homework of the winter holiday, so I feel so relaxed.

19.  After I finish my home work, I will do some review.

20.  We believe that the living must finish the work of Mr. Wang.