* Use if and the suggested words and phrases to complete the following sentences.
1. The forest will be recovered ………………………………………………………………………………………
(plant / trees)
2. The earth will be better ……………………………………………………………………………………………
(know / protect)
3. I’ll go to the university next October ……………………………………………………………………………
(pass / examination)
4. I’ll marry him ………………………………………………………………………………………………………
(my parents / accept)
5. Our environment will not be polluted ……………………………………………………………………………
(obey / environment protection law)
1. The forest will be recovered …if we plant more trees……………………………………………………………………………………
(plant / trees)
2. The earth will be better …if we know to protect it…………………………………………………………………………………………
(know / protect)
3. I’ll go to the university next October …if I pass the examination…………………………………………………………………………
(pass / examination)
4. I’ll marry him …if my parents accept……………………………………………………………………………………………………
(my parents / accept)
5. Our environment will not be polluted if we obey the environment protection law……………………………………………………………………………
(obey / environment protection law)