根据天气给出活动建议 — 英语情景题

情景对话：下雨天，Sam 和妈妈在家门口聊天。请补全对话空位处（每空一词，第(3)空有中文提示）。Sam: Mum, (1)________ ________ ________ ________ today? Mum: It's rainy, Sam. Sam: Rainy? Then let's not go to the park. Mum: Right. It's wet outside, so we should (2)________ at home. Sam: OK. Let's (3)________ ________（读书）at home.