----- Nội dung dịch tự động từ ảnh ----- Exercise 3: Rewrite sentences using "used to/past simple" 1. The typewriter was common, but it was then replaced by the computer in the middle 1900s. 2. My brother masters computer skills now, although he was a low-tech user when he was younger. 3. Jin has recently equipped her house with several housing appliances since June. 4. My grandpa used to find using a smartphone difficult when he first received one last June. 5. My mother lived without any modern digital devices when she was young.