21.  Zn China the students don't go to school from June to July every year on those days the students can do a lot of things.

22.  after a few years, Zhu Ying had to chang'an to take a exam, and then he was beaten to death.

23.  but about seven years after .

24.  this thing happened in twelve years ago when I was four.

25.  But the condition is improving year by year.

26.  at present there are not many Milu deer in nature parks in China, but the number is increasing every year.

27.  they liked the cool wet weather there and their number increased year by year.

28.  That is in the taring year of the Three-kingdom period.

29.  Hundreds of years later, ice cream reached England.

30.  Americans alone eat more than two billion quarts a year.