My sister was fond 1. travelling.Ever since 2. (graduate),she had been 3. (determine) to organize a trip along the Mekong River.She decided to cycle there not caring about the 4. (advantage).She bought an expensive mountain bike and 5. (persuade) me to buy one.I like her but her stubborn attitude was always her shortcoming.Once she made 6. her mind to do something,no one could persuade her 7. (change) her mind.Finally,I gave in as 8. (usually) and agreed to travel as she had organized.Before our trip,we found a large atlas.From it we were 9. (surprise) to learn that half of the Mekong River is in China.After leaving China,it enters Southeast Asia and at last,the river delta enters 10. South China Sea.