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2. These exercises are not easy enough for her to do.
3. She was studying so hard that she had no time for games.
4. The sound is too low for us to hear.
5. The room is too dark for me to see anything.
6. Maria is not intelligent enough to add two and two.
7. The fire is not strong enough to make the kettle boil.
8. He drives too fast for us to follow him.
9. Tom speaks too quickly for me to hear anything.
10. Lan runs too quickly for me to catch up with her.
11. She sings too badly for us to hear all the song.
12. The soup is too hot for me to eat.
13. My ssister is not young enough to drive a car.
14. The radio is big enough for you to put in your pocket.
15. This coat isn't warm enough for me to wear in the winter.
16. She is beautiful and intelligent enough to become Miss World.
17. The weather was fine enough for us to go camping.
18. Those apples aren't ripe enough for us to eat.
19. Mr.Robinson isn't rich enough to buy a house.
20. The worker is clever enough to make fine things from wood.
21. The coffee isn't strong enough to keep us awake.