围绕本课标题 Going on holiday 度假（度假 · 谢绝午餐邀请）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：I've already had lunch / I've just had a cup / We're packing our suitcases / We're going to leave tomorrow / Aren't you lucky / I stayed at home