2 The ladder wasn't long enough to reach the celling .
3 He is strong enough to carry that suitcase.
4 The fire is hot enough to boil a kettel.
S+tobe+adj+enough+(for sb)+to inf
hoặc S+V+adv+enough +(for sb)+to inf
đảm bảo đúng vì mình hôm qua mới đc làm bài này nha