21.  So I washed my face and studied again.Several months late .

22.  Because it retained my sweat .Several months late .

23.  I regarded June as a good month for swimming.

24.  I thought June was the best months on a year.

25.  I try it, after a month, I find it is easier than before .

26.  Several months later, you will find you no longer feel hard in hearing and speaking English.

27.  I kept it on for months, then I could write a good short story.

28.  July is the hottest month and the most exciting moment of this year.

29.  I listened to a lecture a month ago, and the way of studin English book that was learnt from the lecture also developed my interest .

30.  the trip would cost us several months.