`2` My father used to go to work by car some years ago , but now he goes by bus . 

`-` used to + V nguyên

`3` It's about 1,877 kilometres from Ha Noi to Can Tho  .

`-` It's + (about) + khoảng cách + from + place 1 + to + place 2 

`4` It's very important to obery traffic rules when using the road . 

`-` It's + (very,so,...) + adj + to V + ... 

`5` We rode to school by bike two years ago . 

`-` by + phương tiện giao thông 

`6` Mr and Mrs.Smith are travelling to Ha Noi by plane now . 

`-` travel: đi du lịch 

`7` Van used to have a motorbike once . 

`-` used to + V nguyên 

`8` My father usually drives to work . 

`-` drive to place : lái xe đi đâu đó 

`9` This part of the city didn't use to have traffic jam.

`-` didn't use to + V nguyên

`10` I used to go to school on foot . 

`-` go to + place + on foot : đi bộ đến đâu đó