问题
选择题
The mother often tells her son to be a good boy, warning him to ____ trouble. [ ]
A. hold back from
B. keep out of
C. catch up with
D. add up to
答案
答案：B
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The mother often tells her son to be a good boy, warning him to ____ trouble. [ ]
A. hold back from
B. keep out of
C. catch up with
D. add up to
答案：B