1.  we study more than usual and some problem was reminded .we recived very good effect .

2.  though there were lots of problems, we had a very good time.

3.  One problem in China is the condition of population.

4.  He found these were many problems on them, so he Decided to write a medicine book.

5.  He asked people for medicine problem and wllected all kinds of medicine.

6.  So we must begin to solve the air pollution problem of GuangZhou .

7.  Another problem of Guang Zhou is the pollution of the Zhu Jiang River.

8.  If we do not solve the water pollution problem in time, the fish will no longer live in the river.

9.  He wrote articles about housing problem of the poor people and the hard life of the peasants.

10.  Since the new term started, I haven't study hard as I did last term, but some good results covered my problems.