句型转换。 1. Our city is beautiful. (改为感叹句) _______ our city is! 2. There are two hundred famous companies in Xinjiang from 19 provinces. (对画线部分提问) _______ _______ famous companies in Xinjiang are there from 19 provinces? 3. I am surprised to find great changes have taken place in China. (改为同义句) _______ my _______, I find great changes have taken place in China. 4. My son is too young to join the army. (改为同义句) My son isn't _______ to join the army. 5. She hardly knew how to solve this math problem. (完成反义疑问句) She hardly knew how to solve this math problem, _______ _______?