be going to表计划打算 — 英语选择题
题目
Tom 原本计划周末去爬山，但因下雨，他改变了主意，打算待在家里帮妈妈做饭。下列哪句话最能表达 Tom 现在的计划？A. He is going to climb the mountains this weekend. B. He is going to stay at home and help his mom cook this weekend. C. He climbs the mountains every weekend. D. He stayed at home last weekend.