1. My sister/ start/ her/ new/ job/ two/ years/ ago.
=>My sister started her new job two years ago.
2. Rooms/should/be/ clean/everyday.
=>Rooms should be cleaned everyday.
3. We/ not/ see/ each other/ since/ I/ leave/ Ha Noi.
=>We haven't seen each other since I left to Ha Noi.
4. My father/ come/ home/ work/ until/ 9 o'clock.
=>My father came home from work until 9 o'clock.