I was often had to do housework after school. 为什么有了was还有had

I was often had to do housework after school. 为什么有了was还有had I was lare for ____ ,so I had to stay at school after ______ All i had to do was go to school and spend a few hours study he had to look after his mother after school because she was after i had had dinner ,i went to school 还是 after i have had To do this she had to work,and so was often not at home 中的最后 She was quite tired after a long walk.____ she had to do som Tired_____she was ,I had to disturb her . I often had to fight _______ hunger when I was a child. My bike was broken,so I had to walk to school i- all you had to do was think a little harder ,was后面为什么加think的 新概念after they had entered the house.这是一般过去时?为什么有了had还有 enter