根据释义和首字母写出单词（初一英语）

根据释义和首字母写出单词（初一英语）
Don't worry,I;ll back in a m______.(a very short time)
He often t____ his friends to ask for help.(ring sb.up)
The nearest one is ____ 7 kilometres ______.You'd better catch a bus.(这个是补充句子的）