把句子的兩部分合為一句。
          A                                
(     )1.I'm happy                        
(     )2.They made the reserves            
(     )3.They wrote letters                
(     )4.I have a lot of homework          
(     )5.The government is making plans    		       B?                                
A.to do.?                              
B.to see you again.?                  
C.to reduce the pollution.?            
D.to protect the turtles.?            
E.to tell about the animals in danger.?
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