p/s:______ tức là viết lại
III
1,if teacher teaches________ at school,students will more aware______environment
2,if light pollution happens, animals will change their behaviour patterns
3,if the level of_________ decrease,we will switch from________
4,if the water temperature increase,some aquatc creatures will be unable to reproduces
5,if the water is contaminated,people will get more diesases
IV
1,would look
2,would join
3,would be
4,wouldn't dump
5,would happen
6,were
7,would be
8,had
9,wouldn't be
10,would grow
