Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

[Q]: Climbers are the most frequent cause of injury for children ____ and older.
[A]: six


[Q]: Urine tests are really limited in that they only look for five to ____ substances.
[A]: nine


[Q]: Plants typically take two to ____ years to fully mature.
[A]:
three