问题描述：
ed和ing的区别
China will be ______coumtry in the middle of the next century.
A.high-developing
B.high-developed
C.highly-develop
D.highly-developed
请问一下不选A的原因,
China will be ______coumtry in the middle of the next century.
A.high-developing
B.high-developed
C.highly-develop
D.highly-developed
请问一下不选A的原因,
问题解答：
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