Wang Kun and Wang Wei are brothers and sisters. They have dreamed of     1     (take) a great bike trip.     2     was Wang Wei who first had the idea to cycle along the Mekong River. They     3     (ride) bicycles to travel along the Mekong River,    4     source is in Qinghai Province.

    5     it enters Southeast Asia, it travels slowly through hills and low valleys and the plains where rice grows. Despite the     6     (difficult), Wang Kun and Wang Wei were     7     (determination) to begin their journey at     8     altitude of more than 5,000 meters in Qinghai Province.

During   their   journey, they   enjoyed the     9     (continue) change of the weather. Finally, they reached Dali in Yunnan Province,    10     Dao Wei and Yu Hang joined them. The four of them went on with their great bike trip.