In England, schooling is compulsory for all children from the age of 5 to 16. A. put into blush B. put on clothes C. put into force D. taken off 22. In Vietnam, schooling is _______ for all children from the age of three to five. A. optional B. obliged C. compulsory D. compulsive 23. Schooling for Vietnamese children from the age of six to fourteen is _______. A. optional B. odd C. compulsory D. nursery 24. How long does the whole Secondary Education in Vietnam last? – _______ years. A. Four B. Seven C. Three D. Five 25. In Vietnam, children may have _______ whether to continue studying or not. A. thirst B. obligations C. choices D. compulsions ( Giải thích dùm mình luôn nha )