【单选题】Everybody needs water. Everything 16 water,too. We use water 17 the bowls, the clothes, and 18 .We use water to plant trees, flowers and crops. 19 does all water come from? It 20 from clouds...
A.
on
B.
into
C.
going D to go 小题9: A.into B.on C.it D.its 小题10: A.here B.there C.to D.down
【简答题】We are safe neither at home nor in the business office.We use water in both places.Our local water supply added chemicals into the water to kill harmful bacteria.But the chemicals can cause harm to pe...