句型转换。 1. He was reading a book on the playground. (就画线部分提问) ______ was he______ on the playground? 2. It is my first time to be in a plane,so I don't know what I should do. (改为同义句) It is my first time to travel ______ plane, so I don't know what 3. Lucy can speak little English, ______,______? (完成反意疑问句) 4. You can't arrive late for class. (改为祈使句) ______ ______ late for class. 5. He has lived here since he came here . (就画线部分提问) ______ ______ has he lived here?