: I used to live in Ha Noi.
1. They planted those trees many years ago.
=> They used ................................................................................................................................................
2. My baby doesn’t cry at night any more.
=> My baby used ...........................................................................................................................................
3. I don’t take a bus to work
=> I used..........................................................................................................................................................
4. He went to school on foot in many years but doesn’t now .
=> He used......................................................................................................................................................
5. Nam goes to school by bike .
=> Nam ………………………………………..to school .