按要求写句子。 【小题1】I read a book.(改为现在进行时) ________________________________________ 【小题2】He is watching TV.(对画线部分提问) ________________________________________ 【小题3】She is singing a song.(用They替换She) ________________________________________ 【小题4】I am looking at the picture.(改为一般疑问句) ________________________________________ 【小题5】Is she looking at the bird?(作否定回答) ________________________________________