高中英语单选 Nancy enjoyed herself very much last week__she visited her friend in Sydney.
问题描述：
高中英语单选 Nancy enjoyed herself very much last week__she visited her friend in Sydney.
Nancy enjoyed herself very much last week__she visited her friend in Sydney.
Awhich Bthat Cwhere Dwhen
答
D when,先行词是last week,在从句里做时间状语