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.