问题
选择题
When you go outing with the children, you must see to ______that they are safe.
A．them
B．everything
C．it
D．yourself
答案
答案：C
考察固定词组。See to it that务必…确保…;结合句意可知C正确。句意：当你和孩子一起外出的时候，务必要确保他们的安全。
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