按要求完成句子。 1. They are watching TV.( 改为一般疑问句 ) _____ _____ watching TV? 2. She is having an English class. ( 对画线部分提问 ) _____ _____ she _____ ? 3. They are making cards now.( 改为否定句) They _____ _____ cards now. 4. Tom is watching TV . (对划线部分提问) _________ is Tom _________? 5. We are having lunch at home. ( 改为一般疑问句 ) ________ you ________ lunch at home?