21.  Faced with the shortage of water, we must take action.

22.  Let's take actions from now on to protect our fresh water resource for the future.

23.  Second, we should correct others' actions of wasting water.

24.  On the one hand, we must take actions to cut down the excessive demands for water by controlling the overpopulation.

25.  Let's take a part in the action!

26.  Second, the gevonerment should pay attantion to the industrial polution , and take action on it.

27.  Second, we shall conserve fresh water source and fright against the action which pollute fresh water.

28.  To reach our desire, we must oppose the action of wasting fresh water.

29.  Third, the government should take actions to Decline the birthrate and pollution.

30.  If every one of us takes action, we must be able to overcome it.