II. Выполните письменно упражнения 1 Откройте скобки, употребив must или mustn’t. 1 We haven’t got much time. We (…) hurry. 2 Tom gave me a letter to mail. I (…) forget to do it. 3 This book is very valuable. You (…) handle it very carefully and you (…) damage it in any way. 4 Don’t tell anybody. We (…) keep it to ourselves. 5 Your aunt is badly ill. You (…) go and visit her. 6 She is still too weak and (…) stay in bed. 7 Tom is very tired. He (…) work so hard. 8 This is a serious problem. You (…) make a balanced decision. 9 The news is shocking. You (…) tell George if you want to spare (по жалеть) him.