The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any error, mark 'No error' as your answer.

He was enough tall / to be admitted / into the armed forces.

The correct answer is "He was enough tall". 

Key Points

• Enough means 'as much as necessary'.
• It can be used with an adjective, an adverb, a verb or a noun. It can also act as a pronoun.
  • With adjectives and adverbs : enough comes after adjectives and adverbs.
    • For example: I'm not tall enough to reach the top shelf.
    • For example: Your marks are good enough to study engineering at university.
• From the above explanation it can be concluded that the correct sentence is: He was tall enough to be admitted into the armed forces. 

Therefore, the correct answer is "Option 4".

Additional Information

• With verbs: enough comes after verbs.
  • For example: I make sure I drink enough during the day.
• With nouns: enough comes before nouns.
  • For example: There isn't enough bread to make sandwiches.
• As a pronoun: enough can also be used without a noun. 
  • For example: I'll get some more chairs. There aren't enough.
• With an adjective and a noun: When enough is used with an adjective and a noun, two positions are possible but the meaning changes.
  • We haven't got big enough envelopes. 
  • We haven't got enough big envelopes.
• When enough is after the adjective (big enough envelopes), it describes the adjective – the envelopes are too small.
• When enough is before the adjective (enough big envelopes), it describes the noun phrase – we have some big envelopes, but we need more.