重写句子：Fossilfuelsarenon-renewable.Weneedtofindalternativeenergysources.(compoundsentence)
前囟门隆起最常见于（）
There______nothingmorefordiscussion,themeetingendedearlierthanexpected.
Thefarmingmethodshavebeen________improvedwiththeinventionofthenewmachine.
Yourbikeneeds_____.You‘dbetterdoirightnow.
