8. I never worried about my son while I was away because my mother ______ him.
（A）drank a toast to
（B）played a joke on
（C）kept an eye on
（D）made an apology to
参考答案
继续答题：下一题
（A）drank a toast to
（B）played a joke on
（C）kept an eye on
（D）made an apology to
