Ответ:

  1. Christine is too busy to babysit for Timmy tonight; she has a lot of homework for tomorrow.
  2. Did you get enough sleep last night? You seem tired.
  3. One thing that I don't like about this game is that it's too noisy.
  4. James doesn't like the cottage his parents want to rent for the summer, because he doesn't find it modern enough.
  5. Our living room isn't big enough for this sofa; we need to get a smaller one.

Правило: too означает «слишком», а enough — «достаточно». Перед прилагательным употребляется too, после прилагательного — enough; перед неисчисляемым существительным — enough + существительное.

Ответ: 1) too busy; 2) enough sleep; 3) too noisy; 4) modern enough; 5) big enough.