- Bài tập Tiếng Anh lớp 11 Unit 1 The Generation Gap. - in the party.. - II/ Fill in the gaps with "must". - pay to use these facilities because they are included in the membership fee.. - stay in the bed for two days.. - V/ Rewrite each sentence using the word(s) in the brackets, without changing its meaning.. - Every staff isn't allowed to smoke or eat in the office. - You are not allowed to take photographs in the museum. - There are currently six generations living in the United States: the Greatest Generation, Silent Generation, Baby Boomers, Generation X, Millennials, and Generation Z. - Generation gap. - In the 1800s, developments in society were slow. - However, given technological and social advances that have taken place in the 20th and 21st centuries, the lifestyles of individuals even one generation apart are drastically different from each other.. - (7) in the past 20 years. - Most people stayed in the same area or country. - generation gap. - Every staff mustn't smoke or eat in the office.. - You mustn't take photographs in the museum.