Sắp xếp thành các câu hoàn chỉnh
1, There /been/have/transport/interesting/many/inventions/now a day
2, The / a/ is / single - wheel / bike / mô nô wheel 3
3.The/sits / driver/ the / to / heel/ inside and/ pedals go / for ward
4. the/pulls/ dandle/ to driver/to / go / forward/ back/ or pushes/ the / it/go
5. I/ it / way/convenient/ is / guess,/ green/ to/ travel / a