1.We .(to have) enough water in future if we...( to be) careful with it. 2.If we. (to destroy)the places where animals they..(to be ) in danger. 3. Forest animals ... ( to live) in danger if people (to cut) the forest. 4.If schoolchildren. (to write) in their notebooks until theyare completely filled out they .(to reserve) some trees.5.lf people .(to recycle)old things they .(reserve) natural resources.