Multiple choice

Directions: Choose the correct noun and fill in the blank.

Sam is eighteen _________ old.

  1. years

  2. year
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If a unit (like dozen, year) is followed by a noun and preceded by a number, it remains in singualar form. Here, however, 'old' is an adjective, not a noun. Hence, 'years' will be the answer. Sam is eighteen years old. But Sam is an eighteen year old boy.

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