问题补充：
Metal making machines and many other things.
A. used to
B. is used for
C. is used as
D. is used to
答案：
A. used to
(答案→)B. is used for
C. is used as
D. is used to
解析：句意：金属常用语制造机器和许多别的东西。is used for doing sth= is used to do sth 被用来做某事，故选B
如果觉得《Metal making machines and many other things.A. used toB. is used forC. is used asD. is use》对你有帮助，请点赞、收藏，并留下你的观点哦！
