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: Titanium is found in column ____ along with chemically similar zirconium, hafnium, and thorium.

A: four
****
Q: HOD usually shows up as an acute lameness, often seeming to affect all ____ legs simultaneously.

A: four
****
Q: Volcanoes emit ____ sorts of ozone-depleting compounds.

A:
two
****