问题
选择题
Everyone here will thank the firefighters for the things they do to prevent fires ______ the environment
safer. [ ]
A. to make
B. make
C. making
D. from making
答案
答案：A
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Everyone here will thank the firefighters for the things they do to prevent fires ______ the environment
safer. [ ]
A. to make
B. make
C. making
D. from making
答案：A