| A.no | B.fewer | C.more | D.a lot |
| A.a few months | B.about four years |
| C.two years | D.one year |
| A.we can have more time. |
| B.we don’t need to pay much money. |
| C.we can keep healthy. |
| D.we can keep the air clean. |
| A.I begin to ride a bike to work because I had no bus to take. |
| B.The bus moves slowly because there are so many people in it. |
| C.Buses,cars and bikes run on the road in London. |
| D.I spend 40 minutes going by bike. |
| A.cars | B.buses | C.vans(货车) | D.bicycles |