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]: Medial moraine is formed from ____ lateral moraines.
[A]: two

[Q]: Blood donors can give blood every ____ weeks, or six times a year.
[A]: eight

[Q]: Professional wrestlers work day and night, ____ days a week, entertaining millions of people.
[A]:
seven