Fill in: selfish, sociable, pessimistic, shrugged, clenhed, patient, reliable, stubborn, shy, insincere. 1. He was so angry he _______ his fists tightly. 2. Rachel has many friends because she's very ______. 3. ________ people always see the negative side of things. 4. Penny doesn't get angry easily. She's very ______. 5. Thomas is very ________. He won't let you down. 6. Don't believe everything Helen says. She's a bit ______. 7. A ______ person doesn't care about other people's feelings. 8. Jane is very ________ and blushes when strangers talk to her. 9. Henry didn't answer, he just _______ his shoulders instead. 10. Listen to me! Don't be so ________.