Fill in the gaps with mustnt or neednt / dont have

Fill in the gaps with mustnt or neednt / dont have to. 1. A: You mustnt do that again! It was very naughty! B: Im 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 wont. 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: Ive already done it 6. A: You lose the money I gave you. B: Ill put it in a safe place 7. A: You .. buy a gift for Daisys birthday B: Alright. Ill just send a card 8.A: Shall we take a picnic with us for Saturday? B: No, we . Were going to eat at a restaurant