按要求改写句子。 (1)Mr Li is my math teacher.(就划线部分提问) _____________________________________ (2)Is he short? (做否定回答) _____________________________________ (3)She’s thin and tall.(就划线部分提问) ______________________________________ (4)He is tall. (改为否定句) ______________________________________ (5)She is thin.(变一般疑问句). ______________________________________