Cấu trúc "enough":
- S + be + adj + enough + (for SO) + to V
- S + V + enough + N + (for SO) + to V
Bài làm:
`16`. He is hungry enough to eat 3 sandwiches.
`17`. Susan is not old enough to stay at home alone.
`18`. That box is light enough for her to lift.
`19`. Mry doesn't have enough money to buy a new bicycle.
`20`. It's warm enough tonight for us to go out.