`6` He is strong enough to carry the box.
`7` The winter isn't warm enough for us to go swimming.
`8` His father doesn't have enough money to buy a big house.
`9` The weather isn't warm enough for them to have a picnic.
`10` This exercise isn't easy enough for him to do it.
Cấu trúc enough to: S+ be+ adj+ enough (for Sb)+ to V.