1.  The professor turned his back and quickly wrote a series of equations and complex symbols on the blackboard.

2.  We students have seen many TV series, movies and novels talking about love between teenagers.

3.  Reading textbook, doing homework, watching the hit U. S. TV series.

4.  I really enjoy many U. S. TV series such as Big Bang, Friends, House M. D.

5.  Once I watched a TV series where the head nurse refused to accept the male nurses, I thought it ridiculous.

6.  To improve my reading and writing skills, I will make a series of English learning program.

7.  Feminist have achieved a series of victories.

8.  The first thing is to set a goal , after one term's study I should gain the ability to read English papers , to understand the English Films and television series .

9.  By the way , Teacher Zheng have given us a series of writing assignments , it is also a good chance to make it work .

10.  To improving my listening rapidly I do what I can such as seeing varieties series with not seeing the subtitle.