Fill in the blank with a suitable word

I. Fill in the blank with a suitable word.
1. The Earth is the name of the................................we live on.
2. He has a good sense of ..................... He always makes people laugh.
3. Did you help her do this math homework ?- No. Nobody heled her. She did it
4. She never talks about her feeling. She seems quite..............................................
5. They have studied.................. six o'clock
6. They are offering a 10%............................... on all sofas this month.