现在进行时问答：What are you doing? — 英语词汇题
题目
周末，Mike 在电话里问 Lily："What are you doing, Lily?" Lily 回答她正在做晚饭（cook dinner）。过了一会儿，Mike 又问："What is your brother doing?" Lily 说弟弟正在房间读书（read a book）。请补全对话（每空一词，用现在进行时）：1. — What are you doing? — I ______ ______ dinner. 2. — What is your brother doing? — He ______ ______ a book in his room.