----- Nội dung ảnh ----- Grammar Ex1: Complete the sentences with must, mustn’t or don’t have to. 1. We ______________ wear a uniform for sport lessons. We wear our own sports clothes. 2. At our school, we have to wear a uniform. We ______________ wear jeans or T-shirts. 3. We ______________ walk in the corridor. Running is dangerous. 4. We ______________ take our books back to the library so other students can read them. 5. We ______________ talk in the classroom. We have to be quiet. 6. We ______________ go to homework club but lots of people do. Ex2: Correct the mistakes in three of the sentences. Write correct in the two that are correct. 1. You have not to bring anything because the teacher will give you what you need. 2. It will be cold, so you must wear warm clothes! 3. You mustn’t spend so much time on the internet. 4. Tomorrow night you must come to my house. To get to my house you had to take the number 1 bus. 5. You don’t must bring anything because I’ve got everything. 6.