改英语病句（把正确的答案要英文再写一边）：What is Li Ping do?
问题描述：
改英语病句（把正确的答案要英文再写一边）：What is Li Ping do?
答
What does Li Ping do?
答
What is Li Ping doing.
答
What is Li Ping doing?
或What does Li Ping do?