51.  I am regreted that I have never caught sight of it.

52.  Let us catch time together to study!

53.  They said that the two men were imposters and they must try hard to catch them.

54.  After a while, Steffense went out with carying , and after an hour or two, he caught sight of a man riding a pony down the street.

55.  So although I was much late in grade one, I caught up with the group at the end.

56.  Second, for many years I had thought I was very strong and no illness could come to me, but a week ago I caught a serious cold.

57.  They said because you can't catch him on the spot, how do we believe you .

58.  But now without teachers, you must learn these by yourself to catch up with the changing enviroment .

59.  Though I caught on many learns and I believed I could win in the test for enter into university, I sent away for the best way of how to make hight scores.

60.  The students should catch every minute of their university life.