1.  Before coming to the conclusion, we had better look back on the origin of the issue which dates back from the early history of human beings.

2.  Get up at 6: 30 every morning, taking thirty minutes to study the text back to the previous day 1-2 times, .

3.  Just after a week, they got married and back to Spur.

4.  That is why the Asian Pacific Legal Center wanted to back a group of parents who oppose the lawsuit of high school boundaries in 2005.

5.  They back to Spur with bright hope of future.

6.  Fortunatelly, Gussie backed to her hometown .

7.  As everybody know, a lot of travellers who go back home form other country cannot use their mother language skillfully before they use their mother language for some time.

8.  Because the purpose we want to achieve by backing words is application.

9.  First, looking back word list for most people is tedious and difficult to adhere to.

10.  Only looking back a list of words are generally more easily forgotten.