A seventeen-year-old is not _____ to vote in an election.

'Enough' এর আগে adjective বসে৷
সঠিক বাক্য: A seventeen-year-old is not old enough to vote in an election.

আরো উদাহরণ:
- At the time, he wasn't old enough to vote.
- Surely no one would be foolish enough to lend him the money.
- It’s small enough to fit in your pocket.

কিন্তু Noun থাকলে সেটা 'Enough' এর পরে বসে৷
যেমন: I have not enough money to buy a car.

Source: Oxford & Longman Dictionary.