Complete the sentences with the correct form of have to or must. You ________ be at school before the bell rings. You ________ copy the work of other students in exams. You ________ put your mobile phone in your bag during the class. You ________ chew gum in ... You ________ keep silent during the class. Raise your voice if you have any questions. You ________ follow your school and class's rules.
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29 tháng 6, 2017
trong Tiếng Anh lớp 8
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