In 1970, around 5 million people travelled to work by car each day, _ compared____ _to____ about 4 million who used the bus _____ _____ 2 million who commuted by train. Over the next 30 years there was a significant increase in the number of car users, to almost 7 million, __while___ a steady rise in rail passengers, to 3 million. _In_contrast___, the number of bus commuters decreased slightly.

1. compared to (with)

2. and only (about / around)

3. and

4. By contrast (In contrast)

Nhưng chúng ta vẫn có thể dùng những cách khác nhau nữa. Khi viết bạn có thể chuyển đổi các câu theo những cách như ví dụ sau:

"the average person travels x miles each year"

--> "people travel on average x miles every year"