31.  He wrote articles about housing, the hard life of peasants and many subjects.

32.  Karl Marx wrote articles about housing problems of the poor people and the hard life of the peasants.

33.  He wrote articles about housing problems to the poor people and the hard life of the peasants.

34.  He ever rote articles about housing problems of the poor people and the hard life of the peasants.

35.  What a hard work day .

36.  He wrote articles about housing problems of he poor people and the hard life of the peasants.

37.  He wrote articles about housing and hard life of the peasants.

38.  After having run several hundred mertres , the rain became harder and harder, so that we can stop running.

39.  I believe it is a hard work.

40.  In that time, how I can...if I can catch up with other classmates in a short time, I must study hard than before and give up bad habits.