谈论未来想发明的物品 — 英语填空题
题目
根据句意及汉语提示完成短文（每空一词）。In the future, I want to ___ (发明) a special umbrella. It will be small enough to put in a pocket, so it is easy to ___ (携带). When it starts to rain, the umbrella can open by ___ (它自己). I hope my invention will make people's lives ___ (更方便的).