单选题 Mother told me to take an umbrella with me; it might come in handy, she said.
【正确答案】 B
【答案解析】be convenient：方便的；be useful：有用的；get cloudy：(天)阴下来；start raining：开始下雨。题中come in handy意为“有用”，可知B选项符合题目要求。