1. We not spent our summer holiday in Da Lat last year
=> We did not spend summer vacation in Dalat last year
2. My brother often has a three – weeks summer vacation.
=> My brother usually has a three-week summer vacation.
3. Does Nam has less stamps than Viet?
=>Does nam have fewer stamps than Vietnam?
4. Chi usually spends two hours to do her homework every evening.
=>Chi usually spend two hours doing homework every evening.
5. What were you buy at the souvenir store yesterday?
=>What did you buy at the souvenir shop yesterday?