21. He is not experienced enough to do the job.
22. You are not old enough to have money for the front door.
23. He does not have enough money to live on.
24. The buffalo is not big enough to harm you.
25. The ice is not thick enough for him to walk on.
26. The tea is not strong enough to keep us awake.
27. This novel is not interesting enough for me to read.
28. You are not strong enough to lift this table.
29. This kind of rubber is good enough for them to use to make tires.
30. He does not have enough time to finish this work.