同义句转换。 l. Sam runs faster than any other student in his class Sam runs _______ in his class. 2. She came here two hours ago. She _______  _______ here for two hours. 3.The box is light enough for the boy to carry. The box is _______light _______ the boy can carry it. 4. All the boys are laughing,but Jim isn't. All the boys are laughing _______ Jim. 5. He likes watching TV, and his sister likes watchin TV, too. He likes watching TV , _______ _______ his sister. 6. He spent more than two hours on his homework. _______ _______ him more than two hours _______ _______ his homework. 7. I don't know how I can keep my room clean. I don't know how _______ _______ my room clean. 8. The problem is too difficult for me to work out. The problem isn't _______ _______ for me to work out. 9. Mrs. White told Tom that he mustn't throw paper on the ground. Mrs. White told Tom _______ _______ throw paper on the ground.