Parallel structures

1.He asked me about my courses and where I was planning to be next year.
2.The book told how to build a gun cabinet, how to build a bookcase, and all types of furniture that you can make.
3.When I was a member of the basketball team, everyone met me with a happy smile, made lively conversation, and I was invited to many parties.
4.Fires, caused by unheeding persons, have destroyed valuable forests and thereby decreasing our lumber resources.
5.Esther is a helpful person and who makes friends easily
6.We went to rallies to protest against pesticides, oppose n

Question

Parallel structures 

1.He asked me about my courses and where I was planning to be next year.
2.The book told how to build a gun cabinet, how to build a bookcase, and all types of furniture that you can make. 
3.When I was a member of the basketball team, everyone met me with a happy smile, made lively conversation, and I was invited to many parties. 
4.Fires, caused by unheeding persons, have destroyed valuable forests and thereby decreasing our lumber resources. 
5.Esther is a helpful person and who makes friends easily
6.We went to rallies to protest against pesticides, oppose n