the greens go into a cafe for ice-cream．they sit down near me window．mr．green says，"i think it is going to rain．jim，will you go home and fetch my umbrella?" so jim goes back for his father’s umbrella，but one hour later he still doesn't return．"i think，dear，"says mrs. green，" we’d better eat jim's ice-cream before it melts．" suddenly，a voice from behind the door says，"if you do that，i won't go back to fetch it!"
词汇解析
fetch v. 取 reture v. 返回，归来 melt v. 融化