Fill in the gaps with mustn’t or needn’t / don’t have to. 1. A: You …mustn’t … do that again! It was very naughty! B: I’m sorry! 2. A: Shall I but some petrol in the car? B: No, you ……………………. . I did it this morning. 3. A: You ………………..be late tonight. B: I won`t. I will be home early 4. A: Shall I give you lift? B: No you ……………… . I `ll go by taxi 5. A: You ……………… forget to pay the bills today B: I`ve already done it 6. A: You ……………… lose the money I gave you. B: I`ll put it in a safe place 7. A: You ……………….. buy a gift for Daisy`s birthday B: Alright. I`ll just send a card 8.A: Shall we take a picnic with us for Saturday? B: No, we …………………… . We`re going to eat at a restaurant