Fill in the blanket with one suitable word

Question

How easy is ........... to understand another person's character? My friend is Jack was once a rather annoying person. He was always getting ....... trouble because he was so disobedient. In class he was very talkative and never stoped ............ jokes. The teachers all told him .............. was impolite because he interrupted them. When I met him, he was very unfriendly and didn't want to talk to me...............all. People told me he stole things anfd he was dishonest. His school work was terrible. He didn't take any pride in his writing, he never .......... enough time doing his homework, and that he was not at all conscientious. One day he saw a gang of boys attacking an old man. Jack hated violence and he fought them all ............. they ran away. He was awarded a medal for bravery. After that people changed their ........... about him.

Fighting!!!!!!!!!!!