题目

Dear Abby, This is my first letter to you, although I have been reading your column for many years. I need an outside opinion. I am a grandmother in my 70s and have just returned from visiting my daughter, her husband and their three dearly loved children--all under the age of 5--and I'm upset with some of their parenting ways. For example: They lock the doors to their children's bedrooms at night because the children might get out of their beds and wander around the house, and we may not hear them.  If one child should get punishment, all three are punished, and if one child says a naughty We feel ?????? our duty to make our country a better place.A. it?????????????? B. this????? ????????????? ????????????? C. that?????????? ????????????? D. one