----- Nội dung dịch tự động từ ảnh ----- 10. now Exercise 8. Choose the answer A, B, C or D 1. Yesterday I A. must 2. All employees A. must 3. If you are under 13, you A. must 4. We finish my geography project. B. mustn't be late for work. B. mustn't A. mustn't B. must C. have to C. have to get your parents' permission. C. don't have to forget to keep the vegetables in the fridge or else they'll be rotten. C. have to D. don't have to 6 B. mustn't D. had to D. don't have to D. have to