Change the sentence into passive voice

Bài 1: CHANGE THE SENTENCE INTO PASSOIVE. 
 1. My sister will meet you at the airport. 
 -> 
2. I won't buy your glasses. 
-> 
3.He will write a new book for children. 
->
 4. We will plant more trees to reduce the carbon dioxide in the atmosphere. 
 -> 
5. We will save a lot of energy by using low energy light bulbs. 
->
6. Cleaner and safer energy sources will replace possil fulls in the future. 
->
7. They will build a new dam in this area to generate more hydro power. 
->
8. People will use up non - renewable sources of energy soon. 
->
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