根据提示完成短文。
Jack是一个英国小男孩。他今年十岁。他通常星期一到五上学。周末他和爷爷去公园。
他喜欢昆虫。有时，他观察蜻蜓和萤火虫。有时，他在公园里跑步。他的周末过得很愉快。
My 1.____ is Jack. I'm 2.____ years old. I usually 3.____ 4.____ 5.____ from 6.____ to 7.____.
At the 8.____, I often go to the park 9.____ my grandfather. I like 10.____ very much. Sometimes I
11.____ dragonflies and fireflies. Sometimes I 12.____ in the park. I always have a happy 13.____.