单项选择题
Researchers at the University of Illinois determined that the （） of a father can help improve a child's grades
A. involvement B. communication C. interaction D. association
单项选择题 The drunk man was running from side to side in the crowd and he knocked into （）.
单项选择题 "What's your opinion of our teacher's new painting" "It would seem to me that it's （） his usual standard."
单项选择题 When you go to a foreign country, you must（）yourself to new manners and customs.
