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1 When people travel on foot, they usually see the wildlife in the forests.

2 When we travel by bus, we sometimes go to some places of interest.

3 When people travel by train, they often make new friends.

4 When we travel by plane, we sometimes watch beautiful sunsets and sunrises.

5 When we travel by air, we seldom meet a lot of people.

6 When people travel by water, they usually spend a lot of money.

7 When people travel on foot, they often visit museums and art galleries.

8 When we travel by bus, we sometimes enjoy sightseeing.

9 When people travel by bus, they usually stay in hotels and holiday centres.