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.