Plastics can beused to makinginto many useful things. A B C DCused to makingused to ma

发布时间：2020-08-17 13:55:06

Plastics can beused to makinginto many useful things.
A      B      C       DC used to making--- used to make 

网友回答

(答案→)C used to making--- used to make 
解析：used to 这里意思是被用于，所以后面接动词原形。
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