Rearrange the words given to make meaningful sentences

Rerrange the words given to make meaningful sentences
1.There/been/have/transport/interesting/many/inventions/nowadays.
2The/a/is/single-wheel/bike/and/mono-wheel.
3.The/sits/driver/the/to/wheel/inside/and/pedals/go/forward.
4.The/pulls/handle/to/drive/to/go/forward/back/or/pushes/the/it/go.
5.I/it/way.convenient/is/guess/,/green/to/travel/a.