问题
选择题
The teacher often warns the boy _____ swim _____ in the sea because it's dangerous.[ ]
A. don't; alone
B. not; by himself
C. not to; by himself
D. not to; lonely
答案
答案：C
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The teacher often warns the boy _____ swim _____ in the sea because it's dangerous.[ ]
A. don't; alone
B. not; by himself
C. not to; by himself
D. not to; lonely
答案：C