根据括号中的汉语提示, 用单词的适当形式填空。 1. —When did you _______(成为) a soccer player? —Two years ago. 2. Mike is the old woman’s _______(孙子). 3. The boy is good at ________(滑冰). 4. —Is the great musician ________(活着的)? —Yes. He is 88 years old. 5. This is a map of _______(亚洲).