[11.6.12] Rewrite the sentences using the word in bold. 1 Perhaps Nurlan quit his job because it was too stressful. (may) 2 It wasn't necessary for her to come so early yesterday. (needn't) 3 Im sure they informed the boss about the problem. (must) 4 You didn't pay attention. (should) 5 I'm certain they didn't prepare the documents. (can't) 6 Why didn't you ask for her advice? (could) 7 Our employer expects us to wear a suit to work. (supposed) 8 You'll probably feel nervous about your interview. (bound)