题目内容：

She s___ to go to school when she was six years old

优质解答

She started to go to school when she was six years old
她六岁时开始上学.
根据题意,她六岁时 ……上学,可知意思是“开始上学”,以s开头的单词,只能是start,由于时间when引导的从句是过去时态,故start应为过去式,即started.