Đặt câu hỏi cho phần gạch chân 1).................................................................................. => Before Tet, people should clean and decorete their houses ( Gạch ở cụm clean and decorete their houses ) 2) ................................................................................. => We will visit our relatives on the second day of Tet ( Gạch ở cụm on the second day of Tet ) 3) .................................................................................. => Tet lasts ten days ( Gạch ở cụm ten days ) 4)..................................................................................... => People shouldn't eat duck meat at Tet beacause it brings unluckiness ( Gạch ở cụm beacause it brings unluckiness )