21.  That's because a hard work- ten years of hard work .

22.  If you saw seed at the correct time of year, your work will be less and the results will be better.

23.  She requires us reading loud in the morning, listening carefully in the class, going over jour lesson and doing our home work in the evening every day and requires us not watching TV .

24.  He moved to London in 1849, there He made the base for his revolutionary work .

25.  In 1849, he went to England and made London the base for his revolutionary work.

26.  he had studied German, French, English and Russion for his work.

27.  In this two days, we can do something that we can't do in work days.

28.  What a hard work day .

29.  And I can play football with my friends when I have finished my home work.

30.  He moved to London and make the base for his revolutionary work in 1849.