英语单选Thekeyto_____thewheelsofeducationalreformis_____conceptionsofeducation.
Thekeyto_____thewheelsofeducationalreformis_____conceptionsofeducation.
A.speedup,torenewB.speedingup,torenewing
C.speedingup,torenewD.speedup,torenewing
一到to我就不知道是什么成分?能扩展多少就扩展多少.越详细越好,顺便也翻译下,小弟感激不尽!
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