spring is the best season ____ _____ ____ _____in beijing

spring is the best season ____ _____ ____ _____in beijing
spring is the best season ____ _____ ____ _____in beijing

spring is the best season ____ _____ ____ _____in beijing
答案：填to take a trip 旅游
即：Spring is the best season to take a trip in Beijing.
解析：to take a trip 是动词不定式作后置定语,修饰前面的season,根据句意,应该填to take a trip
翻译：春季是在北京旅游最好的季节.