giúp em trắc nghiệm 4 câu thôi ạ, nhưng phải đúng ạaaa Tet holiday is for people to visit their relatives and join festivals, ……… everybody needs to well dress. * 1 điểm A. therefore B. if C. because D. when 11. Most children love Tet ………. they can also receive lucky money. * 1 điểm A. moreover B. while C. because D. therefore 12. Tet is a long holiday………. , it is the largest festival in Vietnam. * 1 điểm A. therefore B. moreover C. while D. if 13. Long couldn't buy ticket. ……….. , he cannot return home for Tet. * 1 điểm A. so B. because C. therefore D. if