英语句型转换（急!）（只有三道）
1.You both get good marks in your exam.(改为否定句）
______ ________ ________gets good marks in your exam.
2.He had to give up halfway because of the snowman.____ _______?（反意疑问句）
3.The flowers are very changable in Shanghai!（改为感叹句）
__________ beautiful the flowers ________!