1) The farmers spread the trees each week
-> The trees... are spread by the farmers each week. .....
2) Mrs Ha told Ba to carry those books back home
-> Mrs Ha  had those books carried back home by Ba......
3) It's two years since I was just in Hanoi
-> I have not.been in Ha Noi for two years ago........
4) Please don't smoke in the dinning room
-> I'd rather.......you not smoke in the dining room.
5) I remember and so did he
-> He didn't... forget either.....
6) I wasn't there at that time
-> He denied.... being there at that time...