----- Nội dung dịch tự động từ ảnh ----- Exercise 6. Complete the sentences with "must" or "mustn't". 1. You musth...t. help your mother with the heavy box. 2. It's very cold. You go out. 3. You look after the house when your parents are away. 4. You ........ ..... wash your face in the morning. 5. You. take your umbrella because it's raining. 6. You ......... 7. You ....... drink that milk, it's very hot. make noise in the class.
