When you go outing with the children you must see to that they are safe.A. themB. everyth

问题补充：

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：

A. them

B. everything

(答案→)C. it

D. yourself

解析：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。