Think of one real day when you had too many things to do and too little time. Do not invent a story — a real day is always easier to speak about.
Sample answer: Last Saturday I wanted to do many things but I could not do them all. It was the only holiday I had that week. My cousin had come from Kanpur, my school project on water was due on Monday, and my friends had planned a cricket match on the ground behind our house. There were only a few hours between breakfast and evening, and I wanted to be in three places at once.