----- Nội dung dịch tự động từ ảnh ----- Font 9. People often clean and decorate their houses Tet. A. during B.after C.before D. on 10.Mekong River is river in South East Asia. A. long B.longer C.longest D. the longest 11.You speak during the exam - it's forbidden. A. should B.shouldn't C.must D. mustn’t 12. we go out for dinner tonight? - Great! A. Must B.Can C.Will D. Shall
