The grandparents___when they saw the gold medal their grandson had got at the Olympic games.
看下列程序 package a; class Parent { private int i = 20; protected int j = 30; public int k = 40; int h = 50; } class Child extends Parent { } class GrandSon extends Child { void f() { } } 在子类GrandSon的方法f()中不可以操作的变量是
my grandson likes to () lovely pets and regards them as his best friends.