The summer vacation had come round again. I was happy that I could forget about school at least for a while. Lest I fool around all through this summer vacation， I made a plan as to how to spend it. First， I thought I should go over all those things my teachers taught in the previous term so that I could have a better understanding of them. Then I thought I should take up some forms of exercise， such as walking， running and rowing， to keep me physically strong. It stood to reason that with such a good plan I should make the best of my vacation time. I did， because I lived up to what I had planned.