21.  Through reading a variety of books and materials, we can in one way remember many new words, in another way review the old words we have seen before.

22.  When we meet the new words we can only comprehend the whole sentence by reading from the before to the after.

23.  Gussie lost her husband many years before.

24.  Days going on and on, we can just say, "I have saw it before.

25.  their life may not be as dull as before .

26.  Before her leaving, Clyde showed love to her.

27.  Before entering college.

28.  Who had lost her husband many years before.

29.  Every morning, our English teacher always required us to recite words learned before.

30.  Just read and think, do not say your vocabulary is poor, and you will find memorizing is not difficult as before.