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: Fossil fuels come in ____ major forms coal, oil and natural gas.

A: three
****
Q: Niobium occurs primarily in ____ minerals, columbite and pyrochlore.

A: two
****
Q: Swing has ____ meanings in jazz.

A:
two
****