1/ Who liked to wear jeans in the 1960s?(Tạm dịch:Ai thích mặc quần jean vào những năm 1960)

=>In the 1960s, many university and college students wore jeans.

 2/ Why did more and more people begin wearing jeans in the 1970s?(Tạm dịch:Tại sao ngày càng nhiều người bắt đầu mặc quần jean vào những năm 1970)

=>In the 1970s more and more people started wearing jeans because they became cheaper.

3/ What happened when jeans became high fashion clothing in the 1980s?(Tạm dịch:Điều gì đã xảy ra khi quần jean trở thành quần áo thời trang cao cấp vào những năm 1980)

=>In the 1980s jeans finally became high fashion clothing. The sale of jeans went up and up. 

4/ When did the sale of jeans stop growing?(Tạm dịch:Khi nào thì việc bán quần jeans dừng lại)

=>But in the 1990s the worldwide economic situation got worse, the sale of jeans stopped growing.

1. Many university and college students like to wear jeans in 1960s.

2. More and more people began wearing jeans in the 1970s because they became cheaper.

3. When jeans became high fashion clothing in the 1980s, the same of jeans went up and up.

4. The sale of jeans stopped growing in the 1990s, when the worldwide economic situation got worse.