nhanh giúp mình với ----- Nội dung dịch tự động từ ảnh ----- III. Choose the correct modal verb to complete the sentences. 1. In a park, you (must / mustn't) 2. On a bus, you (must / mustn't) 3. In a library, students (may / must). 4. In an exam, students (must/mustn't) walk on the grass. talk to the driver. 5. To ride a motorbike. students (must/ have to) 6. In a hotel. guests (must / have to) borrow up to six books. answer all the questions. be over 16 years old. use the exit only in an emergency.
