31.  In the city, dog also help people catch theif .So dogs are really our friends.

32.  More than two hours passed but still no fish was caught.

33.  More than two hours passed but still no fish was caught.

34.  More than two hours passed but still no fish was caught.

35.  You will catch it and use it , that's the Practice Makes Perfect .

36.  I will catch my chance to learn more and more from realizing the society around me.

37.  It is important to know the world outside the campus because the knowledge that we learn from our subjects is not enough to catch up with the ever-changing world.

38.  What kinds of ways can we catch to the social ?

39.  For you see, it often rains, the rivers are full of water, and some places are caught in flood disaster.

40.  We occasionally catch a sight of a dripping pipe especially in public building such as doom-building , dining-room, and office building .