问题
选择题
You must use heaters very carefully as they can easily ______ objects on fire if you are careless. [ ]
A. make
B. set
C. take
D. let
答案
答案：B
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You must use heaters very carefully as they can easily ______ objects on fire if you are careless. [ ]
A. make
B. set
C. take
D. let
答案：B