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.

Cleavage is perfect in ____ directions forming rhombs.
three

Fruit is a silique opening by ____ valves.
two

Pups are unable to swim or find food until ____ to eight weeks old or until the ice melts.

seven