选哪个if there were no exams ,we should have ____ at school.A a more happier time B a much happier

选哪个if there were no exams ,we should have ____ at school.A a more happier time B a much happier
if there were no exams ,we should have ____ at school.
A a more happier time B a much happier time
我不明白more不也是比较级吗 怎么A 不对
不理解much more的用法